FilePlayer: Remove backwards compatibility stuff that we no longer need

webrtc/modules/utility/source/file_player.cc

 /*
  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 372 matching lines @@
     case kFileFormatPcm32kHzFile:
       // audio formats
       return std::unique_ptr<FilePlayer>(
           new FilePlayerImpl(instanceID, fileFormat));
     default:
       assert(false);
       return nullptr;
   }
 }
 
-FilePlayer* FilePlayer::CreateFilePlayer(uint32_t instanceID,
-                                         FileFormats fileFormat) {
-  return FilePlayer::NewFilePlayer(instanceID, fileFormat).release();
-}
-
-void FilePlayer::DestroyFilePlayer(FilePlayer* player) {
-  delete player;
-}
-
 }  // namespace webrtc