omap: Remove unnecessary twl4030_codec_audio settings from board files

twl4030_codec_audio and twl4030_codec_vibra_data has unused field.
In order to remove it, corresponding settings needs to be removed
from board files.

Signed-off-by: Ilkka Koskinen <ilkka.koskinen@nokia.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>