fix网络教室消息同步

mec-im/src/main/java/com/ym/service/Impl/RoomServiceImpl.java

@@ -1870,7 +1870,7 @@ public class RoomServiceImpl implements RoomService {
             }
 
             // 取消网络课群静音
-            if (Objects.nonNull(data.getCancelMuteFlag()) && Objects.isNull(data.getMicrophoneOn())) {
+            if (Objects.isNull(data.getMicrophoneOn())) {
                 return true;
             }
         }