Remove useless "X-Powered-By" header

srv.js

@@ -4,6 +4,8 @@ const express = require('express');
 const app = express();
 const config = require('./config.json');
 
+app.set('x-powered-by', false);
+
 app.get('/generate', function (req, res) {
   res.send('Hello World!');
 })