libertas: drop maintainership

Would be better maintained by somebody who actualy has time for it.
Signed-off-by: NDan Williams <dcbw@redhat.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

MAINTAINERS

@@ -5043,9 +5043,8 @@ S:	Maintained
 F:	drivers/net/ethernet/marvell/sk*
 
 MARVELL LIBERTAS WIRELESS DRIVER
-M:	Dan Williams <dcbw@redhat.com>
 L:	libertas-dev@lists.infradead.org
-S:	Maintained
+S:	Orphan
 F:	drivers/net/wireless/libertas/
 
 MARVELL MV643XX ETHERNET DRIVER