l2tp: remove unused list_head member in l2tp_tunnel

Remove an unused variable in struct l2tp_tunnel which was left behind
by commit c4d48a5 ("l2tp: convert l2tp_tunnel_list to idr").

Signed-off-by: James Chapman <jchapman@katalix.com>
Reviewed-by: Tom Parkin <tparkin@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Author: j-c-h

net/l2tp/l2tp_core.c

@@ -1462,8 +1462,6 @@ int l2tp_tunnel_create(int fd, int version, u32 tunnel_id, u32 peer_tunnel_id,
 	/* Init delete workqueue struct */
 	INIT_WORK(&tunnel->del_work, l2tp_tunnel_del_work);
 
-	INIT_LIST_HEAD(&tunnel->list);
-
 	err = 0;
 err:
 	if (tunnelp)

net/l2tp/l2tp_core.h

@@ -174,7 +174,6 @@ struct l2tp_tunnel {
 	enum l2tp_encap_type	encap;
 	struct l2tp_stats	stats;
 
-	struct list_head	list;		/* list node on per-namespace list of tunnels */
 	struct net		*l2tp_net;	/* the net we belong to */
 
 	refcount_t		ref_count;