cleanup

lib/dao.js

@@ -86,9 +86,6 @@ module.exports = (function() {
     return this.dataValues && this.dataValues.hasOwnProperty(name) ? this.dataValues[name] : this[name]
   }
   DAO.prototype.setDataValue = function(name, value) {
-    if (Utils.hasChanged(this.dataValues[name], value)) {
-      this.isDirty = true
-    }
     this.dataValues[name] = value
   }