V4L/DVB: v4l2-dev: remove duplicated #include

Removed duplicated include "media/cx2341x.h" in
drivers/media/video/cx23885/cx23885-417.c.

Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>