ARM: dts: msm: remove gpio dt entry for configuring mictor on 9630

The CoreSight TPIU driver uses pin control framework to configure
mictor for TPIU trace and falls back on gpio lib if pin control
framework is unavailable. Remove device tree entry for gpio lib
configurations on mdm9630 since pin control support is available
for this chipset.

Change-Id: I88e15c5d6e1b5723f7bd3d2b2455410c541bb918
Signed-off-by: Aparna Das <adas@codeaurora.org>