Remove RtpRtcp::RemoteRTCPStat(RTCPSenderInfo*) as unused

webrtc/modules/rtp_rtcp/include/rtp_rtcp.h

 /*
  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 308 matching lines @@
   virtual void GetSendStreamDataCounters(
       StreamDataCounters* rtp_counters,
       StreamDataCounters* rtx_counters) const = 0;
 
   // Returns packet loss statistics for the RTP stream.
   virtual void GetRtpPacketLossStats(
       bool outgoing,
       uint32_t ssrc,
       struct RtpPacketLossStats* loss_stats) const = 0;
 
-  // Returns received RTCP sender info.
-  // Returns -1 on failure else 0.
-  virtual int32_t RemoteRTCPStat(RTCPSenderInfo* sender_info) = 0;
-
   // Returns received RTCP report block.
   // Returns -1 on failure else 0.
   virtual int32_t RemoteRTCPStat(
       std::vector<RTCPReportBlock>* receive_blocks) const = 0;
 
   // (APP) Sets application specific data.
   // Returns -1 on failure else 0.
   virtual int32_t SetRTCPApplicationSpecificData(uint8_t sub_type,
                                                  uint32_t name,
                                                  const uint8_t* data,
@@ skipping 120 matching lines @@
   virtual int32_t SetKeyFrameRequestMethod(KeyFrameRequestMethod method) = 0;
 
   // Sends a request for a keyframe.
   // Returns -1 on failure else 0.
   virtual int32_t RequestKeyFrame() = 0;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_RTP_RTCP_INCLUDE_RTP_RTCP_H_