Delete old raw .sky examples since they are no longer valid examples.

sky/examples/raw/paint_element_into_displaylist.sky

Index: sky/examples/raw/paint_element_into_displaylist.sky
diff --git a/sky/examples/raw/paint_element_into_displaylist.sky b/sky/examples/raw/paint_element_into_displaylist.sky
deleted file mode 100644
index 31a1962d5370c5a759b2ec869d83e37e78491b62..0000000000000000000000000000000000000000
--- a/sky/examples/raw/paint_element_into_displaylist.sky
+++ /dev/null
@@ -1,24 +0,0 @@
-<script>
-import "dart:sky";
-
-void main() {
-  var root = document.createElement('div');
-  root.style['display'] = 'paragraph';
-  root.appendChild(new Text('Hello World'));
-  document.appendChild(root);
-  root.offsetWidth; // force layout.
-
-  double width = window.innerWidth.toDouble();
-  double height = window.innerHeight.toDouble();
-  PictureRecorder recorder = new PictureRecorder(width, height);
-  Paint paint = new Paint()..color = const Color.fromARGB(255, 0, 255, 0);
-  recorder.drawCircle(50.0, 50.0, 50.0, paint);
-  recorder.translate(10.0, 10.0);
-  root.paint(recorder);
-  recorder.translate(10.0, 10.0);
-  root.paint(recorder);
-  recorder.translate(10.0, 10.0);
-  root.paint(recorder);
-  document.rootPicture = recorder.endRecording();
-}
-</script>