Revert "Pin xDS interop test runner dependencies (#25665)" (#25768)

This reverts commit 7cf91c717a.

tools/internal_ci/linux/grpc_xds_bazel_python_test_in_docker.sh

@@ -25,8 +25,8 @@ cd /var/local/git/grpc
 VIRTUAL_ENV=$(mktemp -d)
 virtualenv "$VIRTUAL_ENV" -p python3
 PYTHON="$VIRTUAL_ENV"/bin/python
-"$PYTHON" -m pip install -r tools/internal_ci/linux/xds_interop_dependencies/pip.lock
-"$PYTHON" -m pip install -r tools/internal_ci/linux/xds_interop_dependencies/requirements.lock
+"$PYTHON" -m pip install --upgrade pip==19.3.1
+"$PYTHON" -m pip install --upgrade grpcio-tools google-api-python-client google-auth-httplib2 oauth2client
 
 # Prepare generated Python code.
 TOOLS_DIR=tools/run_tests

tools/internal_ci/linux/grpc_xds_bazel_test_in_docker.sh

@@ -25,8 +25,8 @@ cd /var/local/git/grpc
 VIRTUAL_ENV=$(mktemp -d)
 virtualenv "$VIRTUAL_ENV" -p python3
 PYTHON="$VIRTUAL_ENV"/bin/python
-"$PYTHON" -m pip install -r tools/internal_ci/linux/xds_interop_dependencies/pip.lock
-"$PYTHON" -m pip install -r tools/internal_ci/linux/xds_interop_dependencies/requirements.lock
+"$PYTHON" -m pip install --upgrade pip==19.3.1
+"$PYTHON" -m pip install --upgrade grpcio grpcio-tools google-api-python-client google-auth-httplib2 oauth2client
 
 # Prepare generated Python code.
 TOOLS_DIR=tools/run_tests

tools/internal_ci/linux/grpc_xds_csharp_test_in_docker.sh

@@ -25,8 +25,8 @@ cd /var/local/git/grpc
 VIRTUAL_ENV=$(mktemp -d)
 virtualenv "$VIRTUAL_ENV" -p python3
 PYTHON="$VIRTUAL_ENV"/bin/python
-"$PYTHON" -m pip install -r tools/internal_ci/linux/xds_interop_dependencies/pip.lock
-"$PYTHON" -m pip install -r tools/internal_ci/linux/xds_interop_dependencies/requirements.lock
+"$PYTHON" -m pip install --upgrade pip==19.3.1
+"$PYTHON" -m pip install --upgrade grpcio grpcio-tools google-api-python-client google-auth-httplib2 oauth2client
 
 # Prepare generated Python code.
 TOOLS_DIR=tools/run_tests

tools/internal_ci/linux/grpc_xds_php_test_in_docker.sh

@@ -25,8 +25,8 @@ cd /var/local/git/grpc
 VIRTUAL_ENV=$(mktemp -d)
 virtualenv "$VIRTUAL_ENV" -p python3
 PYTHON="$VIRTUAL_ENV"/bin/python
-"$PYTHON" -m pip install -r tools/internal_ci/linux/xds_interop_dependencies/pip.lock
-"$PYTHON" -m pip install -r tools/internal_ci/linux/xds_interop_dependencies/requirements.lock
+"$PYTHON" -m pip install --upgrade pip==19.3.1
+"$PYTHON" -m pip install --upgrade grpcio-tools google-api-python-client google-auth-httplib2 oauth2client
 
 # Prepare generated Python code.
 TOOLS_DIR=tools/run_tests

tools/internal_ci/linux/grpc_xds_ruby_test_in_docker.sh

@@ -25,8 +25,8 @@ cd /var/local/git/grpc
 VIRTUAL_ENV=$(mktemp -d)
 virtualenv "$VIRTUAL_ENV" -p python3
 PYTHON="$VIRTUAL_ENV"/bin/python
-"$PYTHON" -m pip install -r tools/internal_ci/linux/xds_interop_dependencies/pip.lock
-"$PYTHON" -m pip install -r tools/internal_ci/linux/xds_interop_dependencies/requirements.lock
+"$PYTHON" -m pip install --upgrade pip==19.3.1
+"$PYTHON" -m pip install --upgrade grpcio-tools google-api-python-client google-auth-httplib2 oauth2client
 
 # Prepare generated Python code.
 TOOLS_DIR=tools/run_tests

tools/internal_ci/linux/xds_interop_dependencies/pip.lock

@@ -1 +0,0 @@
-pip==19.3.1

tools/internal_ci/linux/xds_interop_dependencies/requirements.lock

@@ -1,24 +0,0 @@
-cachetools==4.2.1
-certifi==2020.12.5
-chardet==4.0.0
-google-api-core==1.26.1
-google-api-python-client==2.0.2
-google-auth==1.27.1
-google-auth-httplib2==0.1.0
-googleapis-common-protos==1.53.0
-grpcio==1.36.1
-grpcio-tools==1.36.1
-httplib2==0.19.0
-idna==2.10
-oauth2client==4.1.3
-packaging==20.9
-protobuf==3.15.5
-pyasn1==0.4.8
-pyasn1-modules==0.2.8
-pyparsing==2.4.7
-pytz==2021.1
-requests==2.25.1
-rsa==4.7.2
-six==1.15.0
-uritemplate==3.0.1
-urllib3==1.26.3