media: staging: atomisp: Drop g_parm and s_parm subdev ops use

The s_parm and g_parm did nothing. Remove them.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>