message: Remove reference to an old branch.
  Cr-Commit-Position: refs/heads/main@{#36139}
diff: @@ -36,7 +36,7 @@ NOTIFY_EMAIL = 'webrtc-trooper@webrtc.org'
  def _RemovePreviousUpdateBranch():
  active_branch, branches = _GetBranches()
  if active_branch == UPDATE_BRANCH_NAME:
  - active_branch = 'master'
  + active_branch = 'main'
  if UPDATE_BRANCH_NAME in branches:
  logging.info('Removing previous update branch (%s)', UPDATE_BRANCH_NAME)
  subprocess.check_call(['git', 'checkout', active_branch])
  