chore: remove old node test stuff

Author: titanism

test/node/utils.js

@@ -1,9 +1,6 @@
 'use strict';
 const assert = require('assert');
-const utils =
-  process.env.OLD_NODE_TEST === '1'
-    ? require('../../../utils')
-    : require('../../lib/utils');
+const utils = require('../../lib/utils');
 
 describe('utils.type(str)', () => {
   it('should return the mime type', () => {