Remove old test file (now using the named version)

test/built-ins/Array/prototype/every/15.4.4.16-0-2.js

-// Copyright (c) 2012 Ecma International.  All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-
-/*---
-es5id: 15.4.4.16-0-2
-description: Array.prototype.every.length must be 1
----*/
-
-assert.sameValue(Array.prototype.every.length, 1, 'Array.prototype.every.length');

test/built-ins/Array/prototype/every/length.js

+// Copyright (c) 2012 Ecma International.  All rights reserved.
 // Copyright (C) 2017 Corey Frang. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---