[media] rc-core: ati_remote - leave the internals of rc_dev alone

The REP_DELAY setting on the input device is independent of hardware.
This change should not change how to driver works (as it does a
keydown/keyup and has no real repeat handling).

Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>