media/libraries
andrewlewis b56bdd8da0 Remove unnecessary track group count assertion
When checking the color transfer, there is no reason that the file should have
exactly two tracks, and this assertion means that this method can't be used
as-is for checking video-only files, for example.

PiperOrigin-RevId: 562813111
2023-09-05 10:06:44 -07:00
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