docs: def delete_message_type(self, message_type_id):
          """
          Delete an existing message type
          :param message_type_id: is the id of the message type the
                                  client wants to delete
          """
          self._validate_uuid(message_type_id)
  
          url = "/notification/v1/message-type/{}".format(message_type_id)
          response = NWS_DAO().deleteURL(url, self._write_headers())
  
          if response.status != 204:
              raise DataFailureException(url, response.status, response.data)
          return response.status