unify update check into a single job

src/routes/cloudron.js

@@ -24,7 +24,6 @@ exports = module.exports = {
 };
 
 let assert = require('assert'),
-    async = require('async'),
     auditSource = require('../auditsource.js'),
     BoxError = require('../boxerror.js'),
     cloudron = require('../cloudron.js'),
@@ -204,10 +203,7 @@ function checkForUpdates(req, res, next) {
     // it can take a while sometimes to get all the app updates one by one
     req.clearTimeout();
 
-    async.series([
-        (done) => updateChecker.checkAppUpdates({ automatic: false }, done),
-        (done) => updateChecker.checkBoxUpdates({ automatic: false }, done),
-    ], function () {
+    updateChecker.checkForUpdates({ automatic: false }, function () {
         next(new HttpSuccess(200, { update: updateChecker.getUpdateInfo() }));
     });
 }