ASoC: Samsung: Remove redundant AQUILA driver

AQUILA and GONI are essentially the same h/w w.r.t ASoC.
They only differ by the fact that GONI has stereo speaker-out
whereas AQUILA has mono.

The difference can easily be handled in the same MACHINE driver
by making machine-specific runtime changes.

Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>