Revert "drm/msm/sde: create release/retire fence once per commit"

This reverts commit 61ae08e3.
This was a temporary change made to avoid multiple
release/retire fence creations for the same commit.
The sde fence logic is updated to handle this case,
so removing this redundant change.

Change-Id: I40edf7f85746744bf47085081d6279d4869a33a1
Signed-off-by: Veera Sundaram Sankaran <veeras@codeaurora.org>