Remove unused parameters from VCMReceiver::InsertPacket().

BUG=
R=pbos@webrtc.org

Review URL: https://codereview.webrtc.org/2094183004 .

Cr-Commit-Position: refs/heads/master@{#13309}
diff --git a/webrtc/modules/video_coding/receiver.h b/webrtc/modules/video_coding/receiver.h
index dbef62a..7aa9795 100644
--- a/webrtc/modules/video_coding/receiver.h
+++ b/webrtc/modules/video_coding/receiver.h
@@ -63,9 +63,7 @@
 
   void Reset();
   void UpdateRtt(int64_t rtt);
-  int32_t InsertPacket(const VCMPacket& packet,
-                       uint16_t frame_width,
-                       uint16_t frame_height);
+  int32_t InsertPacket(const VCMPacket& packet);
   VCMEncodedFrame* FrameForDecoding(uint16_t max_wait_time_ms,
                                     int64_t* next_render_time_ms,
                                     bool prefer_late_decoding);