[IPV6]: fix section mismatch warnings

Removed useless and buggy __exit section in the different
ipv6 subsystems. Otherwise they will be called inside an
init section during rollbacking in case of an error in the
protocol initialization.

Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/udplite.c b/net/ipv6/udplite.c
index f20b376..39f0705 100644
--- a/net/ipv6/udplite.c
+++ b/net/ipv6/udplite.c
@@ -96,7 +96,7 @@
 	goto out;
 }
 
-void __exit udplitev6_exit(void)
+void udplitev6_exit(void)
 {
 	inet6_unregister_protosw(&udplite6_protosw);
 	inet6_del_protocol(&udplitev6_protocol, IPPROTO_UDPLITE);