Remove LegacyPlayerView reference from comment in proguard-rules.txt
Remove LegacyPlayerView reference from comment in proguard-rules.txt

This class is deprecated (and will be removed from media3).

#minor-release

PiperOrigin-RevId: 426860018

google/ExoPlayer,androidx/media,androidx/media,androidx/media,google/ExoPlayer,google/ExoPlayer