Revert "msm: kgsl: Add GPUCC register dumps to A6xx GPU snapshot"

This reverts commit 26852d7d.
The GPUCC registers are not ioremapped on some targets which can
cause continuous 'Out of bounds' warnings.

Change-Id: Iebe9b27b74966d937b2e62e9a937be1af5463303
Signed-off-by: Sebanti Das <sebadas@codeaurora.org>