Revert "Support runtime check of function types."

tests/language/function_subtype_setter0_test.dart

Index: tests/language/function_subtype_setter0_test.dart
diff --git a/tests/language/function_subtype_setter0_test.dart b/tests/language/function_subtype_setter0_test.dart
deleted file mode 100644
index 7f48f1b1dac21eeb3268ceef73a74d20d6d30593..0000000000000000000000000000000000000000
--- a/tests/language/function_subtype_setter0_test.dart
+++ /dev/null
@@ -1,40 +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 for implicit setters.
-
-import 'package:expect/expect.dart';
-
-typedef void Foo();
-class A<T> {}
-
-class C {
-  Foo foo;
-  A<int> bar;
-}
-
-class D {
-  Foo foo;
-  A<int> bar;
-}
-
-test(var c) {
-  bool inCheckedMode = false;
-  try {
-    var x = 42;
-    String a = x;
-  } catch (e) {
-    inCheckedMode = true;
-  }
-  if (inCheckedMode) {
-    Expect.throws(() => c.foo = 1, (e) => true);
-  }
-  c.foo = () {};
-}
-
-void main() {
-  test(new C());
-  test(new D());
-}