removed unnecessary event emitter + refactoring

lib/sequelize.js

@@ -102,21 +102,17 @@ module.exports = (function() {
   Sequelize.prototype.sync = function(options) {
     options = options || {}
 
-    if(this.options.sync)
+    if(this.options.sync) {
       options = Sequelize.Utils.merge(options, this.options.sync)
+    }
 
-    var self = this
-
-    return new Utils.CustomEventEmitter(function(emitter) {
-      var chainer = new Utils.QueryChainer
+    var chainer = new Utils.QueryChainer()
 
-      self.daoFactoryManager.daos.forEach(function(dao) { chainer.add(dao.sync(options)) })
+    this.daoFactoryManager.daos.forEach(function(dao) {
+      chainer.add(dao.sync(options))
+    })
 
-      chainer
-        .run()
-        .success(function() { emitter.emit('success', null) })
-        .error(function(err) { emitter.emit('error', err) })
-    }).run()
+    return chainer.run()
   }
 
   Sequelize.prototype.drop = function() {