[S390]: Rewrite of the IUCV base code, part 1

Remove the old IUCV code from drivers/s390/net
Remove approprirate IUCV entries from drivers/s390/net/Makefile,
drivers/s390/net/Kconfig and arch/s390/defconfig

Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/s390/net/Kconfig

@@ -22,13 +22,6 @@ config CTC
 	  available.  This option is also available as a module which will be
 	  called ctc.ko.  If you do not know what it is, it's safe to say "Y".
 
-config IUCV
-	tristate "IUCV support (VM only)"
-	help
-	  Select this option if you want to use inter-user communication
-	  under VM or VIF. If unsure, say "Y" to enable a fast communication
-	  link between VM guests.
-
 config NETIUCV
 	tristate "IUCV network device support (VM only)"
 	depends on IUCV && NETDEVICES