code: def unpublish(scm, published_branch, verbose, fake):
      
      scm.fake = fake
      scm.verbose = fake or verbose
  
      scm.repo_check(require_remote=True)
      branch = scm.fuzzy_match_branch(published_branch)
  
      if not branch:
          scm.display_available_branches()
          raise click.BadArgumentUsage('Please specify a branch to unpublish')
  
      branch_names = scm.get_branch_names(local=False)
  
      if branch not in branch_names:
          raise click.BadArgumentUsage(
              "Branch {0} is not published. Use a branch that is published."
              .format(crayons.yellow(branch)))
  
      status_log(scm.unpublish_branch, 'Unpublishing {0}.'.format(
          crayons.yellow(branch)), branch)
docs: Removes a published branch from the remote repository.