docs/features: Delete double nv50 entry and wrong enumeration

trivial

Fix commit d9b2234042142dc02a4844747d3c35e140da53dc

Signed-off-by: Dieter Nützel <Dieter@nuetzel-hh.de>
Signed-off-by: Marek Olšák <marek.olsak@amd.com>
1 file changed