修复删除网关子设备存在问题2

Controller/SensorGateway/GatewayDeviceController.py

@@ -229,8 +229,6 @@ class GatewayDeviceView(View):
                         # 查询网关序列号,确定MQTT主题
                         sub_device_qs = GatewaySubDevice.objects.filter(id=sub_id_list[0]).\
                             values('device__serial_number')
-                        if not sub_device_qs.exists():
-                            return response.json(173)
                         serial_number = sub_device_qs[0]['device__serial_number']
                         topic_name = SMART_SCENE_TOPIC.format(serial_number)