Migrating another batch of tests to dart 2.

tests/language_strong/closure_type_variable_test.dart

Index: tests/language_strong/closure_type_variable_test.dart
diff --git a/tests/language_strong/closure_type_variable_test.dart b/tests/language_strong/closure_type_variable_test.dart
deleted file mode 100644
index 2ed61c27ccfaa6d4cd178ca2e9d408bf55f26c96..0000000000000000000000000000000000000000
--- a/tests/language_strong/closure_type_variable_test.dart
+++ /dev/null
@@ -1,18 +0,0 @@
-// Copyright (c) 2013, 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.
-
-// Test that the type argument is available inside a closure.
-
-import "package:expect/expect.dart";
-
-class A<T> {
-  foo() {
-    bar() => T;
-    return bar();
-  }
-}
-
-main() {
-  Expect.equals(new A<int>().foo(), int);
-}