message: Fix the update_version.py bug that is breaking nightlies.
diff: @@ -248,16 +248,6 @@ def update_md_files(old_version, new_version):
  replace_string_in_line(r"<version>%s<\/version>" % old_version,
  "<version>%s</version>" % new_version, filepath)
  - # Update any links to colab notebooks.
  - def colab_url(version):
  - version_string = "%s.%s.%s" % (version.major, version.minor, version.patch)
  - prefix = "https://colab.research.google.com/github/tensorflow/models/blob/r"
  - return prefix + version_string + "/"
  -
  - replace_string_in_line(
  - colab_url(old_version), colab_url(new_version),
  - "%s/docs_src/get_started/eager.md" % TF_SRC_DIR)
  -
  def major_minor_change(old_version, new_version):
  """Check if a major or minor change occurred."""
  