tipc: Remove prototype code for supporting multiple zones

Eliminates routines, data structures, and files that were intended
to allows TIPC to support a network containing multiple zones.
Currently, TIPC supports only networks consisting of a single cluster
within a single zone, so this code is unnecessary.

Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/tipc/net.h b/net/tipc/net.h
index de2b9ad..786c940 100644
--- a/net/tipc/net.h
+++ b/net/tipc/net.h
@@ -37,15 +37,17 @@
 #ifndef _TIPC_NET_H
 #define _TIPC_NET_H
 
-struct _zone;
+struct cluster;
 
 /**
  * struct network - TIPC network structure
- * @zones: array of pointers to all zones within network
+ * @clusters: array of pointers to all clusters within zone
+ * @links: number of (unicast) links to cluster
  */
 
 struct network {
-	struct _zone **zones;
+	struct cluster *clusters[2]; /* currently limited to just 1 cluster */
+	u32 links;
 };