arm/dt: msm8226: Remove Pronto PIL duplicate entry

Pronto PIL has a duplicate entry in device tree, it was added by WLAN
team during WLAN bringup. But then the actual entry was then merged
from 3.7 Kernel. So remove the duplicate entry.

Change-Id: Ib4b872b623c22f85446c9b4144c53486902aa51f
Signed-off-by: Sameer Thalappil <sameert@codeaurora.org>