fix tests

src/test/translation-test.js

@@ -5,16 +5,12 @@
 
 'use strict';
 
-var expect = require('expect.js'),
+const expect = require('expect.js'),
     translation = require('../translation.js');
 
 describe('translation', function () {
 
     describe('translate', function () {
-        before(function (done) {
-            done();
-        });
-
         it('nonexisting token', function () {
             var out = translation.translate('Foo {{ bar }}', {}, {});
             expect(out).to.contain('{{ bar }}');