Merge remote-tracking branch 'origin/master'

entry/src/main/ets/common/util/mqtt.ets

@@ -1,4 +1,3 @@
-// src/main/ets/utils/MqttManager.ts
 import { MqttAsync, MqttClient, MqttClientOptions, MqttConnectOptions,MqttQos, MqttMessage, MqttPublishOptions } from '@ohos/mqtt';