Bug 1209091 - Disable add-on signature workaround. r=fabrice

--HG--
extra : rebase_source : fcce79c08380fe8807273bda52839a3928b7548b

dom/apps/UserCustomizations.jsm

@@ -151,9 +151,6 @@ this.UserCustomizations = {
   },
 
   init: function() {
-    // XXX : For testing purposes. Will not commit.
-    AppsUtils.allowUnsignedAddons = true;
-
     this._enabled = false;
     try {
       this._enabled = Services.prefs.getBoolPref("dom.apps.customization.enabled");