chore: remove old node test stuff · forwardemail/superagent@fa573df

Original file line number	Diff line number	Diff line change
`@@ -1,9 +1,6 @@`
`1`	`1`	`'use strict';`
`2`	`2`	`const assert = require('assert');`
`3`		`-const utils =`
`4`		`-process.env.OLD_NODE_TEST === '1'`
`5`		`- ? require('../../../utils')`
`6`		`- : require('../../lib/utils');`
	`3`	`+const utils = require('../../lib/utils');`
`7`	`4`
`8`	`5`	`describe('utils.type(str)', () => {`
`9`	`6`	`it('should return the mime type', () => {`