Revert "net: dccp: initialize (addr,port) listening hashtable"

This reverts commit ec49d83f.

Cause build failures when DCCP is modular.

ERROR: "inet_hashinfo2_init" [net/dccp/dccp.ko] undefined!
Signed-off-by: David S. Miller <davem@davemloft.net>

net/dccp/proto.c

@@ -1141,9 +1141,6 @@ static int __init dccp_init(void)
 		goto out_fail;
 	rc = -ENOBUFS;
 	inet_hashinfo_init(&dccp_hashinfo);
-	inet_hashinfo2_init(&dccp_hashinfo, "dccp_listen_portaddr_hash",
-			    INET_LHTABLE_SIZE, 21,  /* one slot per 2 MB*/
-			    0, 64 * 1024);
 	dccp_hashinfo.bind_bucket_cachep =
 		kmem_cache_create("dccp_bind_bucket",
 				  sizeof(struct inet_bind_bucket), 0,