media: staging/media/mt9t031/Kconfig: remove bogus entry

The 'config SOC_CAMERA_IMX074' is a copy-and-paste error and should be removed.
This Kconfig is for mt9t031 only.

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