Delete unused constructor arguments from VCMJitterBuffer

The NackSender* and KeyFrameRequestSender* arguments were unused.

Bug: webrtc:7408
Change-Id: Iab3b443373953e88c48867d031cb114b4891ab78
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/130503
Reviewed-by: Åsa Persson <asapersson@webrtc.org>
Commit-Queue: Niels Moller <nisse@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#27377}

modules/video_coding/video_coding_impl.h

@@ -57,10 +57,7 @@ class VCMProcessTimer {
 
 class VideoReceiver : public Module {
  public:
-  VideoReceiver(Clock* clock,
-                VCMTiming* timing,
-                NackSender* nack_sender = nullptr,
-                KeyFrameRequestSender* keyframe_request_sender = nullptr);
+  VideoReceiver(Clock* clock, VCMTiming* timing);
   ~VideoReceiver() override;
 
   int32_t RegisterReceiveCodec(const VideoCodec* receiveCodec,