message: internal visibilty change
diff: @@ -186,10 +186,6 @@ py_library(
  name = "client_testlib",
  srcs = ["test.py"],
  srcs_version = "PY3",
  - visibility = visibility + [
  - # TODO(b/178183520): remove once the test no longer depend on internal files.
  - "//learning/serving/testing/prober/model_generators/tpu:__pkg__",
  - ],
  deps = [
  ":test",
  "//tensorflow/python:client",
  