drm/msm: Remove superfluous hang check message

There are plenty of log messages when a hang check and/or fault
occurs there isn't any need to add one more - recovery is
pretty much a given at this point.

Change-Id: Ic0dedbad392807591b726eb9d09af3ad29d7bc30
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>