diff --git a/tools/internal_ci/linux/grpc_basictests_multilang.cfg b/tools/internal_ci/linux/grpc_basictests_multilang.cfg
deleted file mode 100644
index f8a5a4aea51..00000000000
--- a/tools/internal_ci/linux/grpc_basictests_multilang.cfg
+++ /dev/null
@@ -1,30 +0,0 @@
-# Copyright 2017 gRPC authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# Config file for the internal CI (in protobuf text format)
-
-# Location of the continuous shell script in repository.
-build_file: "grpc/tools/internal_ci/linux/grpc_run_tests_matrix.sh"
-timeout_mins: 240
-action {
-  define_artifacts {
-    regex: "**/*sponge_log.*"
-    regex: "github/grpc/reports/**"
-  }
-}
-
-env_vars {
-  key: "RUN_TESTS_FLAGS"
-  value: "-f basictests linux multilang --inner_jobs 16 -j 2 --internal_ci --bq_result_table aggregate_results"
-}
diff --git a/tools/internal_ci/linux/grpc_basictests_node.cfg b/tools/internal_ci/linux/grpc_basictests_node.cfg
deleted file mode 100644
index d7b35a04719..00000000000
--- a/tools/internal_ci/linux/grpc_basictests_node.cfg
+++ /dev/null
@@ -1,30 +0,0 @@
-# Copyright 2019 The gRPC Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# Config file for the internal CI (in protobuf text format)
-
-# Location of the continuous shell script in repository.
-build_file: "grpc/tools/internal_ci/linux/grpc_run_tests_matrix.sh"
-timeout_mins: 60
-action {
-  define_artifacts {
-    regex: "**/*sponge_log.*"
-    regex: "github/grpc/reports/**"
-  }
-}
-
-env_vars {
-  key: "RUN_TESTS_FLAGS"
-  value: "-f basictests linux grpc-node --inner_jobs 16 -j 2 --internal_ci --bq_result_table aggregate_results"
-}
diff --git a/tools/internal_ci/linux/grpc_build_artifacts_extra.cfg b/tools/internal_ci/linux/grpc_build_artifacts_extra.cfg
deleted file mode 100644
index ea9f9bd76e8..00000000000
--- a/tools/internal_ci/linux/grpc_build_artifacts_extra.cfg
+++ /dev/null
@@ -1,26 +0,0 @@
-# Copyright 2017 gRPC authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# Config file for the internal CI (in protobuf text format)
-
-# Location of the continuous shell script in repository.
-build_file: "grpc/tools/internal_ci/linux/grpc_build_artifacts_extra.sh"
-timeout_mins: 480
-action {
-  define_artifacts {
-    regex: "**/*sponge_log.*"
-    regex: "github/grpc/reports/**"
-    regex: "github/grpc/artifacts/**"
-  }
-}
diff --git a/tools/internal_ci/linux/grpc_build_artifacts_extra.sh b/tools/internal_ci/linux/grpc_build_artifacts_extra.sh
deleted file mode 100755
index 718123d7da5..00000000000
--- a/tools/internal_ci/linux/grpc_build_artifacts_extra.sh
+++ /dev/null
@@ -1,29 +0,0 @@
-#!/bin/bash
-# Copyright 2017 gRPC authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-set -ex
-
-# change to grpc repo root
-cd $(dirname $0)/../../..
-
-source tools/internal_ci/helper_scripts/prepare_build_linux_rc
-
-set +ex
-[[ -s /etc/profile.d/rvm.sh ]] && . /etc/profile.d/rvm.sh
-set -e  # rvm commands are very verbose
-rvm --default use ruby-2.4.1
-set -ex
-
-tools/run_tests/task_runner.py -f artifact linux_extra armv7 -j 6
diff --git a/tools/internal_ci/linux/grpc_build_artifacts_extra_release.cfg b/tools/internal_ci/linux/grpc_build_artifacts_extra_release.cfg
deleted file mode 100644
index ea9f9bd76e8..00000000000
--- a/tools/internal_ci/linux/grpc_build_artifacts_extra_release.cfg
+++ /dev/null
@@ -1,26 +0,0 @@
-# Copyright 2017 gRPC authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# Config file for the internal CI (in protobuf text format)
-
-# Location of the continuous shell script in repository.
-build_file: "grpc/tools/internal_ci/linux/grpc_build_artifacts_extra.sh"
-timeout_mins: 480
-action {
-  define_artifacts {
-    regex: "**/*sponge_log.*"
-    regex: "github/grpc/reports/**"
-    regex: "github/grpc/artifacts/**"
-  }
-}
diff --git a/tools/internal_ci/linux/pull_request/grpc_basictests_c_dbg.cfg b/tools/internal_ci/linux/pull_request/grpc_basictests_c_dbg.cfg
deleted file mode 100644
index 249ecc99ce2..00000000000
--- a/tools/internal_ci/linux/pull_request/grpc_basictests_c_dbg.cfg
+++ /dev/null
@@ -1,30 +0,0 @@
-# Copyright 2017 gRPC authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# Config file for the internal CI (in protobuf text format)
-
-# Location of the continuous shell script in repository.
-build_file: "grpc/tools/internal_ci/linux/grpc_run_tests_matrix.sh"
-timeout_mins: 240
-action {
-  define_artifacts {
-    regex: "**/*sponge_log.*"
-    regex: "github/grpc/reports/**"
-  }
-}
-
-env_vars {
-  key: "RUN_TESTS_FLAGS"
-  value: "-f basictests linux c dbg --inner_jobs 16 -j 1 --internal_ci --max_time=3600"
-}
diff --git a/tools/internal_ci/linux/pull_request/grpc_basictests_c_opt.cfg b/tools/internal_ci/linux/pull_request/grpc_basictests_c_opt.cfg
deleted file mode 100644
index 665d7f3d2c9..00000000000
--- a/tools/internal_ci/linux/pull_request/grpc_basictests_c_opt.cfg
+++ /dev/null
@@ -1,30 +0,0 @@
-# Copyright 2017 gRPC authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# Config file for the internal CI (in protobuf text format)
-
-# Location of the continuous shell script in repository.
-build_file: "grpc/tools/internal_ci/linux/grpc_run_tests_matrix.sh"
-timeout_mins: 240
-action {
-  define_artifacts {
-    regex: "**/*sponge_log.*"
-    regex: "github/grpc/reports/**"
-  }
-}
-
-env_vars {
-  key: "RUN_TESTS_FLAGS"
-  value: "-f basictests linux c opt --inner_jobs 16 -j 1 --internal_ci --max_time=3600"
-}
diff --git a/tools/internal_ci/linux/pull_request/grpc_basictests_cpp_dbg.cfg b/tools/internal_ci/linux/pull_request/grpc_basictests_cpp_dbg.cfg
deleted file mode 100644
index 163274d4dc3..00000000000
--- a/tools/internal_ci/linux/pull_request/grpc_basictests_cpp_dbg.cfg
+++ /dev/null
@@ -1,30 +0,0 @@
-# Copyright 2017 gRPC authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# Config file for the internal CI (in protobuf text format)
-
-# Location of the continuous shell script in repository.
-build_file: "grpc/tools/internal_ci/linux/grpc_run_tests_matrix.sh"
-timeout_mins: 240
-action {
-  define_artifacts {
-    regex: "**/*sponge_log.*"
-    regex: "github/grpc/reports/**"
-  }
-}
-
-env_vars {
-  key: "RUN_TESTS_FLAGS"
-  value: "-f basictests linux c++ dbg --inner_jobs 16 -j 1 --internal_ci --max_time=3600"
-}
diff --git a/tools/internal_ci/linux/pull_request/grpc_basictests_cpp_opt.cfg b/tools/internal_ci/linux/pull_request/grpc_basictests_cpp_opt.cfg
deleted file mode 100644
index b65cd3e05c2..00000000000
--- a/tools/internal_ci/linux/pull_request/grpc_basictests_cpp_opt.cfg
+++ /dev/null
@@ -1,30 +0,0 @@
-# Copyright 2017 gRPC authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# Config file for the internal CI (in protobuf text format)
-
-# Location of the continuous shell script in repository.
-build_file: "grpc/tools/internal_ci/linux/grpc_run_tests_matrix.sh"
-timeout_mins: 240
-action {
-  define_artifacts {
-    regex: "**/*sponge_log.*"
-    regex: "github/grpc/reports/**"
-  }
-}
-
-env_vars {
-  key: "RUN_TESTS_FLAGS"
-  value: "-f basictests linux c++ opt --inner_jobs 16 -j 1 --internal_ci --max_time=3600"
-}
diff --git a/tools/internal_ci/linux/pull_request/grpc_basictests_multilang.cfg b/tools/internal_ci/linux/pull_request/grpc_basictests_multilang.cfg
deleted file mode 100644
index 59f38f0d1b2..00000000000
--- a/tools/internal_ci/linux/pull_request/grpc_basictests_multilang.cfg
+++ /dev/null
@@ -1,30 +0,0 @@
-# Copyright 2017 gRPC authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# Config file for the internal CI (in protobuf text format)
-
-# Location of the continuous shell script in repository.
-build_file: "grpc/tools/internal_ci/linux/grpc_run_tests_matrix.sh"
-timeout_mins: 240
-action {
-  define_artifacts {
-    regex: "**/*sponge_log.*"
-    regex: "github/grpc/reports/**"
-  }
-}
-
-env_vars {
-  key: "RUN_TESTS_FLAGS"
-  value: "-f basictests linux multilang --inner_jobs 16 -j 2 --internal_ci --max_time=3600"
-}
diff --git a/tools/internal_ci/linux/pull_request/grpc_basictests_node.cfg b/tools/internal_ci/linux/pull_request/grpc_basictests_node.cfg
deleted file mode 100644
index a0c67cc136c..00000000000
--- a/tools/internal_ci/linux/pull_request/grpc_basictests_node.cfg
+++ /dev/null
@@ -1,30 +0,0 @@
-# Copyright 2019 The gRPC Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# Config file for the internal CI (in protobuf text format)
-
-# Location of the continuous shell script in repository.
-build_file: "grpc/tools/internal_ci/linux/grpc_run_tests_matrix.sh"
-timeout_mins: 60
-action {
-  define_artifacts {
-    regex: "**/*sponge_log.*"
-    regex: "github/grpc/reports/**"
-  }
-}
-
-env_vars {
-  key: "RUN_TESTS_FLAGS"
-  value: "-f basictests linux grpc-node --inner_jobs 16 -j 2 --internal_ci --max_time=3600"
-}
diff --git a/tools/internal_ci/macos/grpc_basictests_node.cfg b/tools/internal_ci/macos/grpc_basictests_node.cfg
deleted file mode 100644
index b2ea7bc505c..00000000000
--- a/tools/internal_ci/macos/grpc_basictests_node.cfg
+++ /dev/null
@@ -1,31 +0,0 @@
-# Copyright 2019 The gRPC Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# Config file for the internal CI (in protobuf text format)
-
-# Location of the continuous shell script in repository.
-build_file: "grpc/tools/internal_ci/macos/grpc_run_tests_matrix.sh"
-gfile_resources: "/bigstore/grpc-testing-secrets/gcp_credentials/GrpcTesting-d0eeee2db331.json"
-timeout_mins: 120
-action {
-  define_artifacts {
-    regex: "**/*sponge_log.*"
-    regex: "github/grpc/reports/**"
-  }
-}
-
-env_vars {
-  key: "RUN_TESTS_FLAGS"
-  value: "-f basictests macos grpc-node --internal_ci -j 1 --inner_jobs 4 --bq_result_table aggregate_results"
-}
diff --git a/tools/internal_ci/macos/pull_request/grpc_basictests_dbg.cfg b/tools/internal_ci/macos/pull_request/grpc_basictests_dbg.cfg
deleted file mode 100644
index c91c0339166..00000000000
--- a/tools/internal_ci/macos/pull_request/grpc_basictests_dbg.cfg
+++ /dev/null
@@ -1,31 +0,0 @@
-# Copyright 2017 gRPC authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# Config file for the internal CI (in protobuf text format)
-
-# Location of the continuous shell script in repository.
-build_file: "grpc/tools/internal_ci/macos/grpc_run_tests_matrix.sh"
-gfile_resources: "/bigstore/grpc-testing-secrets/gcp_credentials/GrpcTesting-d0eeee2db331.json"
-timeout_mins: 240
-action {
-  define_artifacts {
-    regex: "**/*sponge_log.*"
-    regex: "github/grpc/reports/**"
-  }
-}
-
-env_vars {
-  key: "RUN_TESTS_FLAGS"
-  value: "-f basictests macos dbg --exclude objc --internal_ci -j 1 --inner_jobs 4 --max_time=3600"
-}
diff --git a/tools/internal_ci/macos/pull_request/grpc_basictests_node.cfg b/tools/internal_ci/macos/pull_request/grpc_basictests_node.cfg
deleted file mode 100644
index e0eed76f4bb..00000000000
--- a/tools/internal_ci/macos/pull_request/grpc_basictests_node.cfg
+++ /dev/null
@@ -1,31 +0,0 @@
-# Copyright 2019 The gRPC Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# Config file for the internal CI (in protobuf text format)
-
-# Location of the continuous shell script in repository.
-build_file: "grpc/tools/internal_ci/macos/grpc_run_tests_matrix.sh"
-gfile_resources: "/bigstore/grpc-testing-secrets/gcp_credentials/GrpcTesting-d0eeee2db331.json"
-timeout_mins: 120
-action {
-  define_artifacts {
-    regex: "**/*sponge_log.*"
-    regex: "github/grpc/reports/**"
-  }
-}
-
-env_vars {
-  key: "RUN_TESTS_FLAGS"
-  value: "-f basictests macos grpc-node --internal_ci -j 1 --inner_jobs 4 --max_time=3600"
-}
diff --git a/tools/internal_ci/macos/pull_request/grpc_basictests_opt.cfg b/tools/internal_ci/macos/pull_request/grpc_basictests_opt.cfg
deleted file mode 100644
index 532234fa847..00000000000
--- a/tools/internal_ci/macos/pull_request/grpc_basictests_opt.cfg
+++ /dev/null
@@ -1,31 +0,0 @@
-# Copyright 2017 gRPC authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# Config file for the internal CI (in protobuf text format)
-
-# Location of the continuous shell script in repository.
-build_file: "grpc/tools/internal_ci/macos/grpc_run_tests_matrix.sh"
-gfile_resources: "/bigstore/grpc-testing-secrets/gcp_credentials/GrpcTesting-d0eeee2db331.json"
-timeout_mins: 240
-action {
-  define_artifacts {
-    regex: "**/*sponge_log.*"
-    regex: "github/grpc/reports/**"
-  }
-}
-
-env_vars {
-  key: "RUN_TESTS_FLAGS"
-  value: "-f basictests macos opt --exclude objc --internal_ci -j 1 --inner_jobs 4 --max_time=3600"
-}
diff --git a/tools/internal_ci/windows/grpc_basictests.cfg b/tools/internal_ci/windows/grpc_basictests.cfg
deleted file mode 100644
index fcf5237bf3f..00000000000
--- a/tools/internal_ci/windows/grpc_basictests.cfg
+++ /dev/null
@@ -1,30 +0,0 @@
-# Copyright 2017 gRPC authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# Config file for the internal CI (in protobuf text format)
-
-# Location of the continuous shell script in repository.
-build_file: "grpc/tools/internal_ci/windows/grpc_run_tests_matrix.bat"
-timeout_mins: 240
-action {
-  define_artifacts {
-    regex: "**/*sponge_log.*"
-    regex: "github/grpc/reports/**"
-  }
-}
-
-env_vars {
-  key: "RUN_TESTS_FLAGS"
-  value: "-f basictests windows -j 1 --inner_jobs 8 --internal_ci --bq_result_table aggregate_results"
-}
diff --git a/tools/internal_ci/windows/grpc_basictests_dbg.cfg b/tools/internal_ci/windows/grpc_basictests_dbg.cfg
deleted file mode 100644
index 4e5e7b65451..00000000000
--- a/tools/internal_ci/windows/grpc_basictests_dbg.cfg
+++ /dev/null
@@ -1,30 +0,0 @@
-# Copyright 2017 gRPC authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# Config file for the internal CI (in protobuf text format)
-
-# Location of the continuous shell script in repository.
-build_file: "grpc/tools/internal_ci/windows/grpc_run_tests_matrix.bat"
-timeout_mins: 240
-action {
-  define_artifacts {
-    regex: "**/*sponge_log.*"
-    regex: "github/grpc/reports/**"
-  }
-}
-
-env_vars {
-  key: "RUN_TESTS_FLAGS"
-  value: "-f basictests windows dbg -j 1 --inner_jobs 8 --internal_ci --bq_result_table aggregate_results"
-}
diff --git a/tools/internal_ci/windows/grpc_basictests_opt.cfg b/tools/internal_ci/windows/grpc_basictests_opt.cfg
deleted file mode 100644
index f5db6a9897a..00000000000
--- a/tools/internal_ci/windows/grpc_basictests_opt.cfg
+++ /dev/null
@@ -1,30 +0,0 @@
-# Copyright 2017 gRPC authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# Config file for the internal CI (in protobuf text format)
-
-# Location of the continuous shell script in repository.
-build_file: "grpc/tools/internal_ci/windows/grpc_run_tests_matrix.bat"
-timeout_mins: 240
-action {
-  define_artifacts {
-    regex: "**/*sponge_log.*"
-    regex: "github/grpc/reports/**"
-  }
-}
-
-env_vars {
-  key: "RUN_TESTS_FLAGS"
-  value: "-f basictests windows opt -j 1 --inner_jobs 8 --internal_ci --bq_result_table aggregate_results"
-}
diff --git a/tools/internal_ci/windows/pull_request/grpc_basictests.cfg b/tools/internal_ci/windows/pull_request/grpc_basictests.cfg
deleted file mode 100644
index a8e6f0675bd..00000000000
--- a/tools/internal_ci/windows/pull_request/grpc_basictests.cfg
+++ /dev/null
@@ -1,30 +0,0 @@
-# Copyright 2017 gRPC authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# Config file for the internal CI (in protobuf text format)
-
-# Location of the continuous shell script in repository.
-build_file: "grpc/tools/internal_ci/windows/grpc_run_tests_matrix.bat"
-timeout_mins: 240
-action {
-  define_artifacts {
-    regex: "**/*sponge_log.*"
-    regex: "github/grpc/reports/**"
-  }
-}
-
-env_vars {
-  key: "RUN_TESTS_FLAGS"
-  value: "-f basictests windows -j 1 --inner_jobs 8 --internal_ci --max_time=3600"
-}
diff --git a/tools/internal_ci/windows/pull_request/grpc_basictests_dbg.cfg b/tools/internal_ci/windows/pull_request/grpc_basictests_dbg.cfg
deleted file mode 100644
index ce957232fdb..00000000000
--- a/tools/internal_ci/windows/pull_request/grpc_basictests_dbg.cfg
+++ /dev/null
@@ -1,30 +0,0 @@
-# Copyright 2017 gRPC authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# Config file for the internal CI (in protobuf text format)
-
-# Location of the continuous shell script in repository.
-build_file: "grpc/tools/internal_ci/windows/grpc_run_tests_matrix.bat"
-timeout_mins: 240
-action {
-  define_artifacts {
-    regex: "**/*sponge_log.*"
-    regex: "github/grpc/reports/**"
-  }
-}
-
-env_vars {
-  key: "RUN_TESTS_FLAGS"
-  value: "-f basictests windows dbg -j 1 --inner_jobs 8 --internal_ci --max_time=3600"
-}
diff --git a/tools/internal_ci/windows/pull_request/grpc_basictests_opt.cfg b/tools/internal_ci/windows/pull_request/grpc_basictests_opt.cfg
deleted file mode 100644
index 7d2abbfb19a..00000000000
--- a/tools/internal_ci/windows/pull_request/grpc_basictests_opt.cfg
+++ /dev/null
@@ -1,30 +0,0 @@
-# Copyright 2017 gRPC authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# Config file for the internal CI (in protobuf text format)
-
-# Location of the continuous shell script in repository.
-build_file: "grpc/tools/internal_ci/windows/grpc_run_tests_matrix.bat"
-timeout_mins: 240
-action {
-  define_artifacts {
-    regex: "**/*sponge_log.*"
-    regex: "github/grpc/reports/**"
-  }
-}
-
-env_vars {
-  key: "RUN_TESTS_FLAGS"
-  value: "-f basictests windows opt -j 1 --inner_jobs 8 --internal_ci --max_time=3600"
-}