[promises] Disable C++ e2e tests with server_promise_based_call for now (#33008)

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bazel/experiments.bzl

@@ -28,9 +28,6 @@ EXPERIMENTS = {
             "promise_based_client_call",
             "promise_based_server_call",
         ],
-        "cpp_end2end_test": [
-            "promise_based_server_call",
-        ],
         "endpoint_test": [
             "tcp_frame_size_tuning",
             "tcp_rcv_lowat",
@@ -54,9 +51,6 @@ EXPERIMENTS = {
             "memory_pressure_controller",
             "unconstrained_max_quota_buffer_size",
         ],
-        "xds_end2end_test": [
-            "promise_based_server_call",
-        ],
     },
     "on": {
         "flow_control_test": [

src/core/lib/experiments/experiments.yaml

@@ -112,7 +112,8 @@
   default: false
   expiry: 2023/06/01
   owner: ctiller@google.com
-  test_tags: ["core_end2end_test", "cpp_end2end_test", "xds_end2end_test"]
+  test_tags: ["core_end2end_test"]
+  disabled_test_tags: ["cpp_end2end_test", "xds_end2end_test"]
 - name: transport_supplies_client_latency
   description: If set, use the transport represented value for client latency in opencensus
   default: false