Remove Reset from conditionally-compiled decoders.

webrtc/modules/video_coding/codecs/h264/h264_decoder_impl.cc

Index: webrtc/modules/video_coding/codecs/h264/h264_decoder_impl.cc
diff --git a/webrtc/modules/video_coding/codecs/h264/h264_decoder_impl.cc b/webrtc/modules/video_coding/codecs/h264/h264_decoder_impl.cc
index 692422ec447184d36ee3262cfd00df9d63d057ae..a28f41d101e42bd94645257fb699432e008919e6 100644
--- a/webrtc/modules/video_coding/codecs/h264/h264_decoder_impl.cc
+++ b/webrtc/modules/video_coding/codecs/h264/h264_decoder_impl.cc
@@ -241,13 +241,6 @@ int32_t H264DecoderImpl::Release() {
   return WEBRTC_VIDEO_CODEC_OK;
 }
 
-int32_t H264DecoderImpl::Reset() {
-  if (!IsInitialized())
-    return WEBRTC_VIDEO_CODEC_UNINITIALIZED;
-  InitDecode(nullptr, 1);
-  return WEBRTC_VIDEO_CODEC_OK;
-}
-
 int32_t H264DecoderImpl::RegisterDecodeCompleteCallback(
     DecodedImageCallback* callback) {
   decoded_image_callback_ = callback;