Removes relocated error.js tests

Signed-off-by: Rick Waldron <waldron.rick@gmail.com>

test/harness/error.js

@@ -1,29 +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.
-
-/*---
-description: >
-    The global `$ERROR` function throws an instance of the global `Test262Error`
-    function with the specified message.
-includes: [sta.js]
----*/
-var threw = false;
-
-try {
-  $ERROR('This is a test message');
-} catch(err) {
-  threw = true;
-  if (err.constructor !== Test262Error) {
-    throw new Error(
-      'Expected a Test262Error, but a "' + err.constructor.name +
-      '" was thrown.'
-    );
-  }
-  if (err.message !== 'This is a test message') {
-    throw new Error('The error thrown did not define the specified message.');
-  }
-}
-
-if (threw === false) {
-  $ERROR('Expected a Test262Error, but no error was thrown.');
-}