Update or delete language tests using obsolete interfaces or default factory

tests/language/default_interface1_negative_test.dart

Index: tests/language/default_interface1_negative_test.dart
===================================================================
--- tests/language/default_interface1_negative_test.dart	(revision 15648)
+++ tests/language/default_interface1_negative_test.dart	(working copy)
@@ -1,18 +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.
-// VMOptions=--enable_type_checks
-// An interface with a constructor declared must have a default clause
-
-interface IA {
-  IA(); // Compile time error here
-}
-
-main() {
-  try {
-    IA value = new IA();
-  } on Exception catch (e) {
-    print ("Got exception" + e);
-    // compile-time error should not be catchable
-  }
-}