Cleanup sky/sdk/examples

sky/sdk/example/widgets/spinning_mixed.dart

Index: sky/sdk/example/widgets/spinning_mixed.dart
diff --git a/sky/sdk/example/widgets/spinning_mixed.dart b/sky/sdk/example/widgets/spinning_mixed.dart
index ffcac6f4b8966c8a417dcd35f1c768e8a74b84c7..f5145894b95b051712431c22aaae2d8a7b6b71c7 100644
--- a/sky/sdk/example/widgets/spinning_mixed.dart
+++ b/sky/sdk/example/widgets/spinning_mixed.dart
@@ -13,8 +13,7 @@ import 'package:sky/widgets/raised_button.dart';
 import 'package:sky/widgets/widget.dart';
 import 'package:vector_math/vector_math.dart';
 
-import '../lib/solid_color_box.dart';
-import '../../tests/resources/display_list.dart';
+import '../rendering/solid_color_box.dart';
 
 // Solid colour, RenderObject version
 void addFlexChildSolidColor(RenderFlex parent, sky.Color backgroundColor, { int flex: 0 }) {
@@ -61,8 +60,6 @@ Widget builder() {
 double timeBase;
 RenderTransform transformBox;
 
-final TestRenderView tester = new TestRenderView();
-
 void rotate(double timeStamp) {
   if (timeBase == null)
     timeBase = timeStamp;