message: Remove pcre library from Bazel file as it is not used anymore
  It looks like tensorflow does not use pcre anymore. For that it makes
  sense to remove pcre from Bazel files completely to avoid additional
  maintenance.
diff: @@ -608,18 +608,6 @@ def _tf_repositories():
  ],
  )
  - tf_http_archive(
  - name = "pcre",
  - build_file = "//third_party:pcre.BUILD",
  - sha256 = "aecafd4af3bd0f3935721af77b889d9024b2e01d96b58471bd91a3063fb47728",
  - strip_prefix = "pcre-8.44",
  - system_build_file = "//third_party/systemlibs:pcre.BUILD",
  - urls = [
  - "https://storage.googleapis.com/mirror.tensorflow.org/ftp.exim.org/pub/pcre/pcre-8.44.tar.gz",
  - "https://ftp.exim.org/pub/pcre/pcre-8.44.tar.gz",
  - ],
  - )
  -
  tf_http_archive(
  name = "curl",
  build_file = "//third_party:curl.BUILD",
  