V4L/DVB (8457): gspca_sonixb remove some no longer needed sn9c103+ov7630 special cases

gspca_sonixb remove some no longer needed sn9c103+ov7630 special cases

Signed-off-by: Andoni Zubimendi <andoni.zubimendi@gmail.com>
Signed-off-by: Hans de Goede <j.w.r.degoede@hhs.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>