urushi: Remove obsolete ALS configuration

Also remove non-existing keyboard backlight from bootrec

Signed-off-by: Michael Bestas <mikeioannina@gmail.com>

Change-Id: Ic3944d430c195bb53fa0eacb5b5523ec7d4326b1
urushi: Fix leds & backlight configuration on boot

Signed-off-by: Michael Bestas <mikeioannina@gmail.com>

Change-Id: I1dc2b57d0371ec5dd5029370eb76e3e171d9d88d