Remove CommentMap from all DartDoc code.

sdk/lib/_internal/dartdoc/test/comment_map_test.dart

Index: sdk/lib/_internal/dartdoc/test/comment_map_test.dart
diff --git a/sdk/lib/_internal/dartdoc/test/comment_map_test.dart b/sdk/lib/_internal/dartdoc/test/comment_map_test.dart
deleted file mode 100644
index 3d6c4c939df403ca2af615197ed787d445462845..0000000000000000000000000000000000000000
--- a/sdk/lib/_internal/dartdoc/test/comment_map_test.dart
+++ /dev/null
@@ -1,38 +0,0 @@
-// 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.
-
-/// Unit tests for comment map.
-library commentMapTests;
-
-import 'dart:uri';
-import 'dart:mirrors';
-
-import '../../compiler/implementation/scanner/scannerlib.dart' as dart2js;
-
-// TODO(rnystrom): Better path to unittest.
-import '../../../../../pkg/unittest/lib/unittest.dart';
-
-// TODO(rnystrom): Use "package:" URL (#4968).
-part '../lib/src/dartdoc/comment_map.dart';
-
-class FakeSourceLocation implements SourceLocation {
-  Uri get sourceUri => new Uri('file:///tmp/test.dart');
-  int get offset => 69;
-  String get sourceText => """
-    /// Testing
-    ///     var testing = 'this is source code';
-    get foo => 'bar';
-  """;
-}
-
-main() {
-  test('triple slashed comments retain newlines', () {
-    Commentmap cm = new CommentMap();
-    var comment = cm.find(new FakeSourceLocation());
-    expect(
-      comment,
-      equals("Testing\n    var testing = 'this is source code';")
-    );
-  });
-}