Migrate block 163 to Dart 2.0.

tests/language_strong/variable_named_dart_test.dart

Index: tests/language_strong/variable_named_dart_test.dart
diff --git a/tests/language_strong/variable_named_dart_test.dart b/tests/language_strong/variable_named_dart_test.dart
deleted file mode 100644
index 233b60f899e88253c5ca472b24fd67481e550624..0000000000000000000000000000000000000000
--- a/tests/language_strong/variable_named_dart_test.dart
+++ /dev/null
@@ -1,10 +0,0 @@
-// Copyright (c) 2016, 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.
-
-import 'package:expect/expect.dart';
-
-main() {
-  dynamic dart = 123;
-  Expect.equals(dart.toDouble(), 123.0);
-}