[Python Test] Remove googleapis-common-protos from build_python (#36874)

<!--

If you know who should review your pull request, please assign it to that
person, otherwise the pull request would get assigned randomly.

If your pull request is for a specific language, please add the appropriate
lang label.

-->

Closes #36874

COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36874 from XuanWang-Amos:remove_common_proto_dep 51400c5aff
PiperOrigin-RevId: 642424550

tools/run_tests/helper_scripts/build_python.sh

@@ -219,7 +219,7 @@ pip_install_dir "$ROOT/src/python/grpcio_testing"
 # shellcheck disable=SC2261
 pip_install coverage==7.2.0 oauth2client==4.1.0 \
             google-auth>=1.35.0 requests==2.31.0 \
-            googleapis-common-protos>=1.5.5 rsa==4.0 absl-py==1.4.0 \
+            rsa==4.0 absl-py==1.4.0 \
             opentelemetry-sdk==1.21.0
 $VENV_PYTHON "$ROOT/src/python/grpcio_tests/setup.py" preprocess
 $VENV_PYTHON "$ROOT/src/python/grpcio_tests/setup.py" build_package_protos