fix: Remove duplicate cleanupRemoteCommandCenter method

Remove the second duplicate definition of cleanupRemoteCommandCenter
that was causing compilation errors.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: decisivearmor

packages/video_player/video_player_avfoundation/darwin/video_player_avfoundation/Sources/video_player_avfoundation/FVPVideoPlayer.m

@@ -778,17 +778,4 @@ - (void)updateNowPlayingInfo {
 #endif
 }
 
-- (void)cleanupRemoteCommandCenter {
-#if TARGET_OS_IOS
-  MPRemoteCommandCenter *commandCenter = [MPRemoteCommandCenter sharedCommandCenter];
-  
-  [commandCenter.playCommand setEnabled:NO];
-  [commandCenter.pauseCommand setEnabled:NO];
-  [commandCenter.togglePlayPauseCommand setEnabled:NO];
-  [commandCenter.changePlaybackPositionCommand setEnabled:NO];
-  
-  [[MPNowPlayingInfoCenter defaultCenter] setNowPlayingInfo:nil];
-#endif
-}
-
 @end