Revert "dart2js: add compiler builtins to the core-runtime."

sdk/lib/_internal/compiler/js_lib/native_helper.dart

Index: sdk/lib/_internal/compiler/js_lib/native_helper.dart
diff --git a/sdk/lib/_internal/compiler/js_lib/native_helper.dart b/sdk/lib/_internal/compiler/js_lib/native_helper.dart
index 82f97f5f002d2154a7bd0281b0563c140e8dbec6..bec5bbae9b95df632c4e2979cfb295b7c18b199c 100644
--- a/sdk/lib/_internal/compiler/js_lib/native_helper.dart
+++ b/sdk/lib/_internal/compiler/js_lib/native_helper.dart
@@ -91,10 +91,7 @@ void defineProperty(var obj, String property, var value) {
 // Is [obj] an instance of a Dart-defined class?
 bool isDartObject(obj) {
   // Some of the extra parens here are necessary.
-  return JS('bool', '((#) instanceof (#))',
-      obj,
-      JS_BUILTIN('depends:none;effects:none;',
-                 JsBuiltin.dartObjectConstructor));
+  return JS('bool', '((#) instanceof (#))', obj, JS_DART_OBJECT_CONSTRUCTOR());
 }
 
 /**