[media] stradis: remove unused V4L1 headers

Commit 39c3d488

 ("[media] cpia, stradis:
remove deprecated V4L1 drivers") removed the last file including these
five headers. Apparently it was just an oversight to keep them in the
tree. They can safely be removed now.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>