net: proc: change proc_net_remove to remove_proc_entry

proc_net_remove is only used to remove proc entries
that under /proc/net,it's not a general function for
removing proc entries of netns. if we want to remove
some proc entries which under /proc/net/stat/, we still
need to call remove_proc_entry.

this patch use remove_proc_entry to replace proc_net_remove.
we can remove proc_net_remove after this patch.

Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
index de7d4b9..bfa6cc3 100644
--- a/net/ipv6/mcast.c
+++ b/net/ipv6/mcast.c
@@ -2610,14 +2610,14 @@
 	return err;
 
 out_proc_net_igmp6:
-	proc_net_remove(net, "igmp6");
+	remove_proc_entry("igmp6", net->proc_net);
 	goto out;
 }
 
 static void __net_exit igmp6_proc_exit(struct net *net)
 {
-	proc_net_remove(net, "mcfilter6");
-	proc_net_remove(net, "igmp6");
+	remove_proc_entry("mcfilter6", net->proc_net);
+	remove_proc_entry("igmp6", net->proc_net);
 }
 #else
 static inline int igmp6_proc_init(struct net *net)