Delete unused method VideoCodingModule::DiscardedPackets().

webrtc/modules/video_coding/receiver.cc

Index: webrtc/modules/video_coding/receiver.cc
diff --git a/webrtc/modules/video_coding/receiver.cc b/webrtc/modules/video_coding/receiver.cc
index beb24ca643e1158dfe7a9f2f8ba60464c181b331..826647c3ee754a27979eb3ebb5f1769fb1bd9ef4 100644
--- a/webrtc/modules/video_coding/receiver.cc
+++ b/webrtc/modules/video_coding/receiver.cc
@@ -239,10 +239,6 @@ void VCMReceiver::ReceiveStatistics(uint32_t* bitrate, uint32_t* framerate) {
   jitter_buffer_.IncomingRateStatistics(framerate, bitrate);
 }
 
-uint32_t VCMReceiver::DiscardedPackets() const {
-  return jitter_buffer_.num_discarded_packets();
-}
-
 void VCMReceiver::SetNackMode(VCMNackMode nackMode,
                               int64_t low_rtt_nack_threshold_ms,
                               int64_t high_rtt_nack_threshold_ms) {