MAINTAINERS: update status of sky2 and skge drivers

The old SysKonnect NIc's are not used or actively maintained anymore.
My sky2 NIC's are all in box in back corner of attic.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Link: https://patch.msgid.link/20240801162930.212299-1-stephen@networkplumber.org


Signed-off-by: Jakub Kicinski <kuba@kernel.org>