code: def remove_collaborator(self, login):
          
          resp = False
          if login:
              url = self._build_url('collaborators', login, base_url=self._api)
              resp = self._boolean(self._delete(url), 204, 404)
          return resp
docs: Remove collaborator ``login`` from the repository.
  
          :param str login: (required), login name of the collaborator
          :returns: bool