fix some tests

tests/language/src/ThirdTest.dart

 // 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.
 // Third dart test program.
 
-class A extends B {
+class A {
   var a;
   static var s;
 
   static foo() {
     return s;
   }
 
-  A(x, y) : super(y), a = x { }
+  A(x, y) : a = x + y + 1 { }
 
   value() {
-    return a + b + foo();
+    return a + foo();
   }
 }
 
 
 class B {
   var b;
   static var s;
 
   static foo(x) {
     return x + s;
@@ skipping 15 matching lines @@
     var b = new B(3);
     A.s = 4;
     B.s = 5;
     Expect.equals(26, a.value() + b.value());
  }
 }
 
 main() {
   ThirdTest.testMain();
 }