+++ common/modules/base.jsm
@@ -378,9 +378,6 @@
                   this.constructor.className ? this.constructor.className + "#" :
                       "";
 
-        deprecated.warn(func,
-                        obj + (fn.realName || fn.name || name || "").replace(/__/g, "."),
-                        alternative);
         return func.apply(this, arguments);
     }
     if (func.name)