def remove_subscriber(self, message):
        logger.debug("Remove Subcriber")
        host, port = message.destination
        key_token = hash(str(host) + str(port) + str(message.token))
        try:
            self._relations[key_token].transaction.completed = True
            del self._relations[key_token]
        except __HOLE__:
            logger.warning("No Subscriber")
dataset/ETHPy150Open Tanganelli/CoAPthon/coapthon/layers/observelayer.py/ObserveLayer.remove_subscriber