[media] dvb_usb_v2: remove rc-core stub implementations

Those are not needed anymore as all dvb-usb-v2 drivers has proper
dependency checks for RC-core.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
1 file changed