ARM: dts: msm: Remove the msm gpio node for msm8916

All msm8916 drivers need to use the pinctrl msm_gpio
so retire the existing msm gpio controller node.

Change-Id: I32834474cc8d995a185c81e482710ad68a566bfa
Signed-off-by: Kaushal Kumar <kaushalk@codeaurora.org>