unused fields in index.js

https://github.com/Comcast/Speed-testJS/blob/master/index.js

var os = require('os');
var downloadData = require('./modules/downloadData');
var validateIP = require('validate-ip-node');

var testPlanController = new TestPlanController(apiRouter, global.AddressIpv4, global.AddressIpv6);
var latencyController = new LatencyController(apiRouter);
var downloadProbeController = new DownloadProbeController(apiRouter);
var downloadController = new DownloadController(apiRouter);
var uploadProbeController = new UploadProbeController(apiRouter);
var uploadController = new UploadController(apiRouter);
var calculatorController = new CalculatorController(apiRouter);
var testServerController = new TestServerController(apiRouter);