Delete deprecated method VideoCodingModule::SetReceiverRobustnessMode

Bug: webrtc:7408
Change-Id: Ie0eb5b4b1522948bc215cab6e3aaaa745f4b3698
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/141401
Reviewed-by: Åsa Persson <asapersson@webrtc.org>
Commit-Queue: Niels Moller <nisse@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#28245}
diff --git a/modules/video_coding/include/video_coding.h b/modules/video_coding/include/video_coding.h
index 2ee2ab8..38208aa 100644
--- a/modules/video_coding/include/video_coding.h
+++ b/modules/video_coding/include/video_coding.h
@@ -137,24 +137,6 @@
                                  const RTPHeader& rtp_header,
                                  const RTPVideoHeader& video_header) = 0;
 
-  // Robustness APIs
-
-  // DEPRECATED.
-  // Set the receiver robustness mode. The mode decides how the receiver
-  // responds to losses in the stream. The type of counter-measure is selected
-  // through the robustnessMode parameter. The errorMode parameter decides if it
-  // is allowed to display frames corrupted by losses. Note that not all
-  // combinations of the two parameters are feasible. An error will be
-  // returned for invalid combinations.
-  // Input:
-  //      - robustnessMode : selected robustness mode.
-  //      - errorMode      : selected error mode.
-  //
-  // Return value      : VCM_OK, on success;
-  //                     < 0, on error.
-  enum ReceiverRobustness { kNone, kHardNack };
-  virtual int SetReceiverRobustnessMode(ReceiverRobustness robustnessMode) = 0;
-
   // Sets the maximum number of sequence numbers that we are allowed to NACK
   // and the oldest sequence number that we will consider to NACK. If a
   // sequence number older than |max_packet_age_to_nack| is missing
diff --git a/modules/video_coding/video_coding_impl.cc b/modules/video_coding/video_coding_impl.cc
index d0d9461..1d12ac9 100644
--- a/modules/video_coding/video_coding_impl.cc
+++ b/modules/video_coding/video_coding_impl.cc
@@ -98,11 +98,6 @@
                                     video_header);
   }
 
-  int SetReceiverRobustnessMode(ReceiverRobustness robustnessMode) override {
-    RTC_CHECK_EQ(robustnessMode, kHardNack);
-    return VCM_OK;
-  }
-
   void SetNackSettings(size_t max_nack_list_size,
                        int max_packet_age_to_nack,
                        int max_incomplete_time_ms) override {