Make sure setter does not conflict with method

tests/language/field7_negative_test.dart

Index: tests/language/field7_negative_test.dart
===================================================================
--- tests/language/field7_negative_test.dart	(revision 14588)
+++ tests/language/field7_negative_test.dart	(working copy)
@@ -1,23 +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 to catch error reporting bugs in class fields declarations.
-// Should be an error because we have a setter overriding a function name.
-
-class A {
-  int a() {
-    return 1;
-  }
-  void set a(var val) {
-    int i = val;
-  }
-}
-
-class Field7NegativeTest {
-  static testMain() {
-  }
-}
-
-main() {
-  Field7NegativeTest.testMain();
-}