Revert "msm: mdss: handle mmagic mdss axi clock for msm8996 target"

This reverts commit 832b482b ("msm: mdss: handle mmagic mdss
axi clock for msm8996 target"). SMMU driver adds the vote for
mmagic mdss axi clock vote which will take care of MDP and
DSI use cases. No need to put vote from individual module.

Change-Id: I858f28eb88deb34a612050d913459e62cc0955a8
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>