[media] media: rc: nuvoton: remove wake states

Wake states have never been in use and now that we can set the
wakeup sequence via sysfs there's in general no need for them.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>