test: use fakeRegistry for org test

Author: zkat

test/tap/org.js

@@ -1,10 +1,10 @@
 'use strict'
 
-var mr = require('npm-registry-mock')
-
 var test = require('tap').test
 var common = require('../common-tap.js')
 
+var mr = common.fakeRegistry.compat
+
 var server
 
 test('setup', function (t) {