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/addrconf.c b/net/ipv6/addrconf.c
index bad7108..4dc0d44 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -3332,7 +3332,7 @@
 
 static void __net_exit if6_proc_net_exit(struct net *net)
 {
-       proc_net_remove(net, "if_inet6");
+	remove_proc_entry("if_inet6", net->proc_net);
 }
 
 static struct pernet_operations if6_proc_net_ops = {