Test fix

tests/corelib/list_contains_argument_order_test.dart

Index: tests/corelib/list_contains_argument_order_test.dart
diff --git a/tests/corelib/list_contains_argument_order_test.dart b/tests/corelib/list_contains_argument_order_test.dart
index 4b9eaf23bbff52be2a8eabf98f6084b24cbd4f0d..44a8794ccc4af6f2f4de0da8c186bd8a2eca8c2f 100644
--- a/tests/corelib/list_contains_argument_order_test.dart
+++ b/tests/corelib/list_contains_argument_order_test.dart
@@ -30,14 +30,12 @@ main() {
     const <A>[ const A() ],
     new Set()..add(new A()),
     (new Map()..[new A()] = 0).keys,
-    (new Map()..[0] = new A()).values];
-int i = 0;
+    (new Map()..[0] = new A()).values
+  ];
+
   for (var iterable in iterables) {
-    print(i++);
     test(iterable);
-    print(i++);
     test(iterable.map((x) => x));
-    print(i++);
     test(iterable.take(1));
   }
 }