Remove unused #include <linux/version.h>'s in
  drivers/media/video/cx231xx/cx231xx-avcore.c
  drivers/media/video/cx231xx/cx231xx-vbi.c
Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>