docs: def do_remove(config, config_dir):
      """
      CLI action "remove configuration".
      """
      if not os.path.exists(config_dir):
          print "Configuration '{}' does not exist.".format(config)
          exit(1)
      if confirm("Confirm removal of the configuration '{}'".format(config)):
          shutil.rmtree(config_dir)
          print "Configuration '{}' has been removed.".format(config)
      else:
          print "Removal cancelled."