Revert "Cache display lists for Drawables"

This reverts commit c062c7003f.

Change-Id: I96d4f0482b927101f52140b667f4c38ffc8687f5

graphics/java/android/graphics/drawable/BitmapDrawable.java

@@ -456,7 +456,7 @@ public class BitmapDrawable extends Drawable {
     }
 
     @Override
-    protected void onDraw(Canvas canvas) {
+    public void draw(Canvas canvas) {
         Bitmap bitmap = mBitmap;
         if (bitmap != null) {
             final BitmapState state = mBitmapState;