diff --git a/example/iot-gateway/node_modules/express/lib/middleware/query.js b/example/iot-gateway/node_modules/express/lib/middleware/query.js
+++ /dev/null
@@ -1,51 +0,0 @@
-/*!
- * express
- * Copyright(c) 2009-2013 TJ Holowaychuk
- * Copyright(c) 2013 Roman Shtylman
- * Copyright(c) 2014-2015 Douglas Christopher Wilson
- * MIT Licensed
- */
-
-'use strict';
-
-/**
- * Module dependencies.
- */
-
-var parseUrl = require('parseurl');
-var qs = require('qs');
-
-/**
- * @param {Object} options
- * @return {Function}
- * @api public
- */
-
-module.exports = function query(options) {
- var opts = Object.create(options || null);
- var queryparse = qs.parse;
-
- if (typeof options === 'function') {
- queryparse = options;
- opts = undefined;
- }
-
- if (opts !== undefined) {
- if (opts.allowDots === undefined) {
- opts.allowDots = false;
- }
-
- if (opts.allowPrototypes === undefined) {
- opts.allowPrototypes = true;
- }
- }
-
- return function query(req, res, next){
- if (!req.query) {
- var val = parseUrl(req).query;
- req.query = queryparse(val, opts);
- }
-
- next();
- };
-};