FilePlayer: Remove backwards compatibility stuff that we no longer need

webrtc/modules/utility/source/file_player.cc

Index: webrtc/modules/utility/source/file_player.cc
diff --git a/webrtc/modules/utility/source/file_player.cc b/webrtc/modules/utility/source/file_player.cc
index 75b7214f5c8e79055f17312afd9bd8edc04651f9..7fbb1359a2121581c194c779727cfe0d96f12723 100644
--- a/webrtc/modules/utility/source/file_player.cc
+++ b/webrtc/modules/utility/source/file_player.cc
@@ -390,13 +390,4 @@ std::unique_ptr<FilePlayer> FilePlayer::NewFilePlayer(
   }
 }
 
-FilePlayer* FilePlayer::CreateFilePlayer(uint32_t instanceID,
-                                         FileFormats fileFormat) {
-  return FilePlayer::NewFilePlayer(instanceID, fileFormat).release();
-}
-
-void FilePlayer::DestroyFilePlayer(FilePlayer* player) {
-  delete player;
-}
-
 }  // namespace webrtc