--- a/plugins/mod_roster.lua	Fri Dec 09 17:07:57 2016 +0100
+++ b/plugins/mod_roster.lua	Tue Dec 13 21:23:48 2016 +0100
@@ -19,7 +19,6 @@
 local rm_remove_from_roster = require "core.rostermanager".remove_from_roster;
 local rm_add_to_roster = require "core.rostermanager".add_to_roster;
 local rm_roster_push = require "core.rostermanager".roster_push;
-local core_post_stanza = prosody.core_post_stanza;
 
 module:add_feature("jabber:iq:roster");