message: Do not expose tf_proto_library_py any more.
  Use tf_proto_library for all protos to reduce confusion.
diff: @@ -31,7 +31,6 @@ load(
  _tf_profiler_client_deps = "tf_profiler_client_deps",
  _tf_proto_library = "tf_proto_library",
  _tf_proto_library_cc = "tf_proto_library_cc",
  - _tf_proto_library_py = "tf_proto_library_py",
  _tf_protobuf_compiler_deps = "tf_protobuf_compiler_deps",
  _tf_protobuf_deps = "tf_protobuf_deps",
  _tf_protos_all = "tf_protos_all",
  @@ -75,7 +74,6 @@ tf_portable_proto_lib = _tf_portable_proto_lib
  tf_portable_deps_no_runtime = _tf_portable_deps_no_runtime
  tf_proto_library = _tf_proto_library
  tf_proto_library_cc = _tf_proto_library_cc
  -tf_proto_library_py = _tf_proto_library_py
  tf_protobuf_compiler_deps = _tf_protobuf_compiler_deps
  tf_protobuf_deps = _tf_protobuf_deps
  tf_protos_all = _tf_protos_all
  