fix issue for pub upload.

Author: cloudwebrtc

lib/src/native/media_stream_track_impl.dart

@@ -83,16 +83,6 @@ class MediaStreamTrackNative extends MediaStreamTrack {
     return Helper.setSpeakerphoneOn(enable);
   }
 
-  @override
-  void selectAudioOutput(String deviceId) async {
-    return Helper.selectAudioOutput(deviceId);
-  }
-
-  @override
-  void selectAudioInput(String deviceId) async {
-    return Helper.selectAudioInput(deviceId);
-  }
-
   @override
   Future<ByteBuffer> captureFrame() async {
     var filePath = await getTemporaryDirectory();