tipc: remove dead code in struct tipc_topsrv

max_rcvbuf_size is no longer used since commit "414574a0".
Signed-off-by: Zhaolong Zhang <zhangzl2013@126.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/tipc/topsrv.c

@@ -60,7 +60,6 @@
  * @awork: accept work item
  * @rcv_wq: receive workqueue
  * @send_wq: send workqueue
- * @max_rcvbuf_size: maximum permitted receive message length
  * @listener: topsrv listener socket
  * @name: server name
  */
@@ -72,7 +71,6 @@ struct tipc_topsrv {
 	struct work_struct awork;
 	struct workqueue_struct *rcv_wq;
 	struct workqueue_struct *send_wq;
-	int max_rcvbuf_size;
 	struct socket *listener;
 	char name[TIPC_SERVER_NAME_LEN];
 };
@@ -648,7 +646,6 @@ int tipc_topsrv_start(struct net *net)
 		return -ENOMEM;
 
 	srv->net = net;
-	srv->max_rcvbuf_size = sizeof(struct tipc_subscr);
 	INIT_WORK(&srv->awork, tipc_topsrv_accept);
 
 	strscpy(srv->name, name, sizeof(srv->name));