[intl] Remove regexp-prepare/regexp-assert from intl testcfg

Now that intl.js is gone, there's no particular reason to worry about
Intl features accidentally using RegExp objects in a way that would
be visible to author code.

Bug: v8:5751
Change-Id: I7bb274ed124ac593ab5f4f6995941f11a0ded480
Reviewed-on: https://chromium-review.googlesource.com/c/1325030Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57409}

test/intl/regexp-assert.js

-// Copyright 2016 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-assertEquals("a", RegExp.$1);
-assertEquals("b", RegExp.$2);
-assertEquals("c", RegExp.$3);
-assertEquals("d", RegExp.$4);
-assertEquals("e", RegExp.$5);
-assertEquals("f", RegExp.$6);
-assertEquals("g", RegExp.$7);
-assertEquals("h", RegExp.$8);
-assertEquals("i", RegExp.$9);
-
-assertEquals("abcdefghij", RegExp.lastMatch);
-assertEquals("j", RegExp.lastParen);
-assertEquals(">>>", RegExp.leftContext);
-assertEquals("<<<", RegExp.rightContext);
-assertEquals(">>>abcdefghij<<<", RegExp.input);

test/intl/regexp-prepare.js

-// Copyright 2016 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-/(\w)(\w)(\w)(\w)(\w)(\w)(\w)(\w)(\w)(\w)/.exec(">>>abcdefghij<<<");

test/intl/testcfg.py

@@ -43,8 +43,7 @@ class TestSuite(testsuite.TestSuite):
       files.sort()
       for filename in files:
         if (filename.endswith(".js") and filename != "assert.js" and
-            filename != "utils.js" and filename != "regexp-assert.js" and
-            filename != "regexp-prepare.js"):
+            filename != "utils.js"):
           fullpath = os.path.join(dirname, filename)
           relpath = fullpath[len(self.root) + 1 : -3]
           testname = relpath.replace(os.path.sep, "/")
@@ -80,9 +79,7 @@ class TestCase(testcase.D8TestCase):
     files = map(lambda f: os.path.join(self.suite.root, f), [
         'assert.js',
         'utils.js',
-        'regexp-prepare.js',
         self.path + self._get_suffix(),
-        'regexp-assert.js',
     ])
 
     if self._test_config.isolates: