Delete unused argument |require_key_frame|

Bug: webrtc:7408
Change-Id: I59e73e6c54de5b2d293b83d54556e3d3fc6180f4
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/181073
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Reviewed-by: Philip Eliasson <philipel@webrtc.org>
Commit-Queue: Niels Moller <nisse@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31884}
diff --git a/modules/video_coding/video_coding_impl.cc b/modules/video_coding/video_coding_impl.cc
index 829a3f0..fd87ad9 100644
--- a/modules/video_coding/video_coding_impl.cc
+++ b/modules/video_coding/video_coding_impl.cc
@@ -57,10 +57,8 @@
   void Process() override { receiver_.Process(); }
 
   int32_t RegisterReceiveCodec(const VideoCodec* receiveCodec,
-                               int32_t numberOfCores,
-                               bool requireKeyFrame) override {
-    return receiver_.RegisterReceiveCodec(receiveCodec, numberOfCores,
-                                          requireKeyFrame);
+                               int32_t numberOfCores) override {
+    return receiver_.RegisterReceiveCodec(receiveCodec, numberOfCores);
   }
 
   void RegisterExternalDecoder(VideoDecoder* externalDecoder,