MAINTAINERS: drop cyclades.com reference

cyclades.com is a dead domain.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20210302062214.29627-2-jslaby@suse.czSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

MAINTAINERS

@@ -4885,7 +4885,6 @@ F:	include/uapi/linux/cyclades.h
 
 CYCLADES PC300 DRIVER
 S:	Orphan
-W:	http://www.cyclades.com/
 F:	drivers/net/wan/pc300*
 
 CYPRESS_FIRMWARE MEDIA DRIVER