smb is no longer maintained

The smb filesystem in the Linux kernel is unmaintained for years.
Signed-off-by: Adrian Bunk <bunk@stusta.de>

MAINTAINERS

@@ -2557,13 +2557,6 @@ M:	thomas@winischhofer.net
 W:	http://www.winischhofer.at/linuxsisusbvga.shtml
 S:	Maintained
 
-SMB FILESYSTEM
-P:	Urban Widmark
-M:	urban@teststation.com
-W:	http://samba.org/
-L:	samba@samba.org
-S:	Maintained
-
 SMC91x ETHERNET DRIVER
 P:	Nicolas Pitre
 M:	nico@cam.org