Remove unused VideoDecoderConfig::GetHumanReadableProfile

No one use it. Remove.

Bug: None
Change-Id: Id65c425b74149dc85658820d88192684f60e9c0d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1959787
Auto-Submit: Yuchen Liu <yucliu@chromium.org>
Commit-Queue: Xiaohan Wang <xhwang@chromium.org>
Reviewed-by: Xiaohan Wang <xhwang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#723483}

media/base/video_decoder_config.h

@@ -78,8 +78,6 @@ class MEDIA_EXPORT VideoDecoderConfig {
 
   std::string GetHumanReadableCodecName() const;
 
-  static std::string GetHumanReadableProfile(VideoCodecProfile profile);
-
   VideoCodec codec() const { return codec_; }
   VideoCodecProfile profile() const { return profile_; }
   AlphaMode alpha_mode() const { return alpha_mode_; }