drm/imagination: Skip check on paired job fence during job submission

drm/imagination: Skip check on paired job fence during job submission

While submitting a paired fragment job, there is no need to manually
look for, and skip, the paired job fence, as the existing logic to
resolve dependencies to pvr_queue_fence objects will have failed to
resolve it already and continued with the next one.

Point this out where the fence is actually accessed and drop the related
check.

Signed-off-by: Alessio Belle <alessio.belle@imgtec.com>
Reviewed-by: Brajesh Gupta <brajesh.gupta@imgtec.com>
Link: https://patch.msgid.link/20260330-job-submission-fixes-cleanup-v1-3-7de8c09cef8c@imgtec.com
Signed-off-by: Matt Coster <matt.coster@imgtec.com>