def remove_bundle_listener(self, listener):
        """
        Unregisters a bundle listener

        :param listener: The bundle listener to unregister
        :return: True if the listener has been unregistered, else False
        """
        with self.__bnd_lock:
            if listener not in self.__bnd_listeners:
                return False

            self.__bnd_listeners.remove(listener)
            return True