ASoC: tlv320aic3x: Remove even more unused code

Now that we're not implementing GPIO or microphone detection support
there's no users for the read() function any more.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Jarkko Nikula <jarkko.nikula@bitmer.com>
1 file changed