removed unused reference

lib/model-factory.js

@@ -174,7 +174,6 @@ module.exports = (function() {
     return this.build(values).save()
   }
 
-
   ModelFactory.prototype.__defineGetter__('primaryKeys', function() {
     var result = {}
     Utils._.each(this.attributes, function(dataTypeString, attributeName) {

lib/model.js

@@ -29,10 +29,6 @@ module.exports = (function() {
     get: function(){ return this.sequelize.getQueryInterface() }
   })
 
-  Object.defineProperty(Model.prototype, 'QueryGenerator', {
-    get: function(){ return this.QueryInterface.QueryGenerator }
-  })
-
   Object.defineProperty(Model.prototype, 'isDeleted', {
     get: function() {
       var result = this.__options.timestamps && this.__options.paranoid