Migrating another batch of tests to dart 2.

tests/language/closure_test.dart

Index: tests/language/closure_test.dart
diff --git a/tests/language/closure_test.dart b/tests/language/closure_test.dart
deleted file mode 100644
index 9dc3a90994cdb2eacce12f69a85c70a4f549f95c..0000000000000000000000000000000000000000
--- a/tests/language/closure_test.dart
+++ /dev/null
@@ -1,24 +0,0 @@
-// 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.
-// Dart test for closures.
-
-import "package:expect/expect.dart";
-
-class A {
-  var field;
-  A(this.field) {}
-}
-
-class ClosureTest {
-  static testMain() {
-    var o = new A(3);
-    foo() => o.field++;
-    Expect.equals(3, foo());
-    Expect.equals(4, o.field);
-  }
-}
-
-main() {
-  ClosureTest.testMain();
-}