Revert "Wrote functions to convert collections and maps to strings and invoked"

runtime/lib/growable_array.dart

Index: runtime/lib/growable_array.dart
diff --git a/runtime/lib/growable_array.dart b/runtime/lib/growable_array.dart
index 240c7cdadc3314a72ecde3453b708b8537bbaace..2d021ddf01bf62c31e6406ce7648d7485432d8c1 100644
--- a/runtime/lib/growable_array.dart
+++ b/runtime/lib/growable_array.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// 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.
 
@@ -227,7 +227,7 @@ class GrowableObjectArray<T> implements List<T> {
   }
 
   String toString() {
-    return Collections.collectionToString(this);
+    return Arrays.asString(this);
   }
 
   Iterator<T> iterator() {