fix bug

modules/mogo-trafficlive/src/main/java/com/mogo/cloud/trafficlive/core/TrafficLiveManager.java

@@ -55,11 +55,6 @@ public class TrafficLiveManager implements ILiveProgressListener {
             throw new Exception("liveSn can not be null");
         }
 
-        if (MoGoLiveManager.getInstance().isPlaying()) {
-            trafficLiveCallBack.onError("正在直播中，请勿重复请求");
-            return;
-        }
-
         this.callBack = trafficLiveCallBack;
         this.surfaceView = surfaceView;
         requestLiveManager.requestVehicleHeadLive(LIVE_TYPE_OPEN, liveSn, new IRequestLiveListener() {