feat:删除多余东西

@@ -12,11 +12,6 @@ class SimpleServer
         $this->httpServer = new Server($host, $port);
     }
     public function router($url, $callback){
-        $this->httpServer->on($url, function ($request, $response) use ($callback){
-            $response->header("Content-Type", "text/plain");
-            $content = call_user_func($callback);
-            $response->end("Hello World\n");
-        });
         $this->httpServer->on('Request', function (Request $request, Response $response) use ($url, $callback){
             $requestInfo = [
                 'path' => $request->server['path_info'],