MAINTAINERS: remove linux@lists.openrisc.net

$ host -t mx lists.openrisc.net
Host lists.openrisc.net not found: 3(NXDOMAIN)
Signed-off-by: NJiri Slaby <jslaby@suse.cz>
Cc: Jonas Bonn <jonas@southpole.se>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

MAINTAINERS

@@ -8258,7 +8258,6 @@ F:	drivers/of/resolver.c
 OPENRISC ARCHITECTURE
 M:	Jonas Bonn <jonas@southpole.se>
 W:	http://openrisc.net
-L:	linux@lists.openrisc.net (moderated for non-subscribers)
 S:	Maintained
 T:	git git://openrisc.net/~jonas/linux
 F:	arch/openrisc/