Remove duplicated Intl.[[Prototype]] test

test/intl402/Intl/proto.js

@@ -1,10 +0,0 @@
-// Copyright 2013 Mozilla Corporation. All rights reserved.
-// This code is governed by the license found in the LICENSE file.
-
-/*---
-es5id: 8.0
-description: Tests that Intl has Object.prototype as its prototype.
-author: Norbert Lindenberg
----*/
-
-assert.sameValue(Object.getPrototypeOf(Intl), Object.prototype, "Intl doesn't have Object.prototype as its prototype.");