chore: remove duplicate test

test/built-ins/Set/prototype/set-prototype.js

@@ -1,15 +0,0 @@
-// Copyright (C) 2015 the V8 project authors. All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-/*---
-es6id: 23.2.1.1
-description: >
-    Set ( [ iterable ] )
-
-    17 ECMAScript Standard Built-in Objects
-
-includes: [propertyHelper.js]
----*/
-
-verifyNotEnumerable(this, "Set");
-verifyWritable(this, "Set");
-verifyConfigurable(this, "Set");