ARM: dts: msm: Remove GPIO pins that are unused on Mojave

cam_snapshot and cam_focus GPIO pins are unused on Mojave,
thus remove them from DT. Those pins are used for ADV7481
on Mojave.

Change-Id: I8c0026a215fdc2cf1aa94eb763f82258229435c8
Suggested-by: Resmi Rajendran <resmir@qti.qualcomm.com>
Signed-off-by: Rahul Sharma <sharah@codeaurora.org>