message: remove flaky centos 7 based build action
diff: @@ -88,21 +88,6 @@ jobs:
  docker run -i --rm -v $PWD:/v -w /v --net=host \
  -e BAZEL_OPTIMIZATION="${BAZEL_OPTIMIZATION}" \
  ubuntu:20.04 bash -x -e source.sh
  - - name: CentOS 7
  - run: |
  - if [[ "${EVENT_NAME}" == "push" && "${REPO_NAME}" == "tensorflow/io" ]]; then
  - printf '%s\n' "${GCP_CREDS}" >service_account_creds.json
  - export BAZEL_OPTIMIZATION="--remote_cache=https://storage.googleapis.com/tensorflow-sigs-io --remote_upload_local_results=true --google_credentials=service_account_creds.json"
  - else
  - export BAZEL_OPTIMIZATION="--remote_cache=https://storage.googleapis.com/tensorflow-sigs-io --remote_upload_local_results=false"
  - fi
  - set -x -e
  - bash -x -e .github/workflows/build.space.sh
  - python3 .github/workflows/build.instruction.py docs/development.md "##### CentOS 7" > source.sh
  - cat source.sh
  - docker run -i --rm -v $PWD:/v -w /v --net=host \
  - -e BAZEL_OPTIMIZATION="${BAZEL_OPTIMIZATION}" \
  - centos:7 bash -x -e source.sh
  macos-bazel:
  name: Bazel macOS
  