Remove unused arguments and variable in MediaOptimization.

webrtc/modules/video_coding/video_sender.cc

Index: webrtc/modules/video_coding/video_sender.cc
diff --git a/webrtc/modules/video_coding/video_sender.cc b/webrtc/modules/video_coding/video_sender.cc
index 536e33ad9ae0d3a18eb41481725b12b361fcbccb..33d8439973372b5f24f528db7adba1ec9176cfcf 100644
--- a/webrtc/modules/video_coding/video_sender.cc
+++ b/webrtc/modules/video_coding/video_sender.cc
@@ -197,8 +197,7 @@ EncoderParameters VideoSender::UpdateEncoderParameters(
     const EncoderParameters& params,
     VideoBitrateAllocator* bitrate_allocator,
     uint32_t target_bitrate_bps) {
-  uint32_t video_target_rate_bps = _mediaOpt.SetTargetRates(
-      target_bitrate_bps, params.loss_rate, params.rtt);
+  uint32_t video_target_rate_bps = _mediaOpt.SetTargetRates(target_bitrate_bps);
   uint32_t input_frame_rate = _mediaOpt.InputFrameRate();
   if (input_frame_rate == 0)
     input_frame_rate = current_codec_.maxFramerate;