Revert "Support runtime check of function types."

tests/language/function_subtype_closure0_test.dart

Index: tests/language/function_subtype_closure0_test.dart
diff --git a/tests/language/function_subtype_closure0_test.dart b/tests/language/function_subtype_closure0_test.dart
deleted file mode 100644
index 1d6437bcfb21d50ef8a97976f275b680e265d625..0000000000000000000000000000000000000000
--- a/tests/language/function_subtype_closure0_test.dart
+++ /dev/null
@@ -1,36 +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.
-// Dart test program for constructors and initializers.
-
-// Check function subtyping of static functions.
-
-import 'package:expect/expect.dart';
-
-typedef I<T> f2<T>();
-
-class X {
-  static J<bool> f1() => null;
-}
-
-class C<T> {
-  C(f2<T> f);
-}
-
-class I<T> {}
-class J<T> extends I<int> {}
-
-main() {
-
-  bool inCheckedMode = false;
-  try {
-    String a = 42;
-  } catch (e) {
-    inCheckedMode = true;
-  }
-
-  new C<int>(X.f1);
-  if (inCheckedMode) {
-    Expect.throws(() => new C<bool>(X.f1), (e) => true);
-  }
-}