Delete all logic related to VCMDecodeErrorMode

Bug: webrtc:8064
Change-Id: I345f342a314d88390fff8b305b121076b45a51e8
Reviewed-on: https://webrtc-review.googlesource.com/c/116692
Reviewed-by: Philip Eliasson <philipel@webrtc.org>
Reviewed-by: Erik Språng <sprang@webrtc.org>
Commit-Queue: Niels Moller <nisse@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#26283}
diff --git a/modules/video_coding/video_coding_impl.h b/modules/video_coding/video_coding_impl.h
index e6b1215..87fc5f6 100644
--- a/modules/video_coding/video_coding_impl.h
+++ b/modules/video_coding/video_coding_impl.h
@@ -131,15 +131,12 @@
 
   // DEPRECATED.
   int SetReceiverRobustnessMode(
-      VideoCodingModule::ReceiverRobustness robustnessMode,
-      VCMDecodeErrorMode errorMode);
+      VideoCodingModule::ReceiverRobustness robustnessMode);
 
   void SetNackSettings(size_t max_nack_list_size,
                        int max_packet_age_to_nack,
                        int max_incomplete_time_ms);
 
-  void SetDecodeErrorMode(VCMDecodeErrorMode decode_error_mode);
-
   int32_t SetReceiveChannelParameters(int64_t rtt);
   int32_t SetVideoProtection(VCMVideoProtection videoProtection, bool enable);