save session when terminate abnormally

app/Http/Controllers/AuthController.php

@@ -188,7 +188,6 @@ class AuthController extends Controller
         }
 
         Session::put('last_mail_time', time());
-        Session::save();
 
         View::json('邮件已发送，一小时内有效，请注意查收.', 0);
     }

app/Http/Controllers/UserController.php

@@ -111,7 +111,6 @@ class UserController extends Controller
                     setcookie('token', '', time() - 3600, '/');
 
                     Session::flush();
-                    Session::save();
 
                     View::json('账号已被成功删除', 0);
                 }

app/Http/Middleware/CheckAuthenticated.php

@@ -25,7 +25,6 @@ class CheckAuthenticated
                 setcookie('token', '', time() - 3600, '/');
 
                 Session::flush();
-                Session::save();
 
                 throw new PrettyPageException('你已经被本站封禁啦，请联系管理员解决', 5);
             }