conf: layer.conf: Remove alsa-state
conf: layer.conf: Remove alsa-state

alsa-state may be recommended by some packets. Assure that we don't
add it in our images.

Signed-off-by: Codrin Ciubotariu <97034fe81dd68ee5e1fa3aa6216f6373b034daef@microchip.com>

linux4sam/meta-atmel,linux4sam/meta-atmel,linux4sam/meta-atmel,linux4sam/meta-atmel,linux4sam/meta-atmel