Remove unmaintained utils/testrunner

utils/testrunner/layout_test_runner.dart

-// Copyright (c) 2012, 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.
-
-part of layout_test;
-
-// The filters must be set by the caller that #sources this file.
-List includeFilters;
-List excludeFilters;
-
-/**
- * A special marker string used to separate group names and
- * identify non-debug output.
- */ 
-final marker = '###';
-
-class LayoutTestConfiguration extends unittest.Configuration {
-  get autoStart => false;
-  void onTestResult(unittest.TestCase testCase) {
-    window.postMessage('done', '*'); // Unblock DRT
-  }
-}
-
-filterTest(t) {
-  var name = t.description.replaceAll(marker, " ");
-  if (includeFilters.length > 0) {
-    for (var f in includeFilters) {
-      if (name.indexOf(f) >= 0) return true;
-    }
-    return false;
-  } else if (excludeFilters.length > 0) {
-    for (var f in excludeFilters) {
-      if (name.indexOf(f) >= 0) return false;
-    }
-    return true;
-  } else {
-    return true;
-  }
-}
-
-runTests(testMain) {
-  unittest.groupSep = marker;
-  unittest.unittestConfiguration = new LayoutTestConfiguration();
-
-  // Create the set of test cases.
-  unittest.group('', testMain);
-
-  // Do any user-specified test filtering.
-  unittest.filterTests(filterTest);
-
-  // Filter to the test number in the search query.
-  var testNum = int.parse(window.location.search.substring(6));
-  if (testNum < 0 || testNum >= unittest.testCases.length) {
-    print('#TEST NONEXISTENT');
-    window.postMessage('done', '*'); // Unblock DRT
-  } else {
-    var name = unittest.testCases[testNum].description;
-    print('#TEST $name');
-    unittest.filterTests(name);
-    // Run the test.
-    print('Tests - ${unittest.testCases.length}');
-    unittest.runTests();
-  }
-}