ARM: dts: msm: Update APC MEM ACC settings for 8939 V3.0

Remove runtime MEM ACC custom register configuration
to improve the device stability for 8939 V3.0 parts.

CRs-Fixed: 942744
Change-Id: I62138e4c76657a0ec6431ca296559536ef98c2bc
Signed-off-by: Tirupathi Reddy <tirupath@codeaurora.org>
Signed-off-by: Bharat Pawar <bpawar@codeaurora.org>