unittest step2: bye bye to multiple entrypoints for unittest

frog/tests/frog/src/NodeConsoleHelper.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #library('ConsoleHelper');
 
-#import('unittest_node.dart');
 #import('../../../lib/node/node.dart');
 #import('NodeTestHelper.dart');
 
 // This program is designed to be executed as a sub-process by NodeConsoleTest
 // (Node doesn't expose "dup" or "dup2", so this is the only way to capture
 // the output of stderr, stdout during testing.)
 
 main() {
   printTestOutputBanner();
   var argv = process.argv;
@@ skipping 29 matching lines @@
     case 'assert-false':
       console.assert(false);
       break;
     case 'assert-false2':
       console.assert(false, "assert-false2");
       break;
     default:
       console.error("unknown argument. argv=${argv}");
       break;
   }
-}
+}