FLAC extension: remove sample rate check
FLAC extension: remove sample rate check

This check is not needed because the FLAC specification does not
restrict the sample rate value and because the extension reads files
with other sample rates properly.

PiperOrigin-RevId: 292909391

androidx/media,androidx/media,ened/ExoPlayer,google/ExoPlayer,stari4ek/ExoPlayer,stari4ek/ExoPlayer,ened/ExoPlayer,amzn/exoplayer-amazon-port,androidx/media,google/ExoPlayer,amzn/exoplayer-amazon-port,ened/ExoPlayer,amzn/exoplayer-amazon-port,google/ExoPlayer,stari4ek/ExoPlayer