disp: rotator: remove warning log from spin_lock

On rotator commit failure resync timeline will
happen which gives continuous warning logs in
console leads to cpu throttling. To resolve this
the warning message is removed from spin_lock.

Change-Id: I5ce66413556518668769cad3bc6a900f9bdada4b
Signed-off-by: Mahadevan <mahap@codeaurora.org>