V4L/DVB: ngene: remove unused #include <linux/version.h>

Remove unused #include <linux/version.h>('s) in
  drivers/media/dvb/ngene/ngene-dvb.c
  drivers/media/dvb/ngene/ngene-i2c.c

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