V4L/DVB (11111a): MAINTAINERS: Drop references to deprecated video4linux list

Mailing list video4linux-list@redhat.com is deprecated, so drop
references to it in MAINTAINERS.

MAINTAINERS |    2 --

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>