clean code

lib/crowi/express-init.js

@@ -47,6 +47,9 @@ module.exports = function(crowi, app) {
       overloadTranslationOptionHandler: i18nSprintf.overloadTranslationOptionHandler
     });
 
+  // omit unnecessary header
+  app.disable('x-powered-by');
+
   app.use(function(req, res, next) {
     var now = new Date()
       , baseUrl

lib/crowi/index.js

@@ -389,7 +389,6 @@ Crowi.prototype.buildServer = function() {
   var express = require('express')()
     , env = this.node_env
     ;
-  express.disable('x-powered-by')
   require('./express-init')(this, express);
 
   // import plugins