media: vicodec: fix sparse warning

drivers/media/platform/vicodec/vicodec-core.c:160:25: warning: variable 'q_out' set but not used [-Wunused-but-set-variable]

It's indeed not used, and it can be removed.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>