The ivtv driver has gained support a long time ago for audio
and video settings via V4L2 API.

Let's drop support of the duplicated controls implemented
abusing the DVB API.
Acked-by: NHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab+huawei@kernel.org>