Reduce unnecessary layout passes

- Also delete unused code
diff --git a/res/layout/apps_customize_widget.xml b/res/layout/apps_customize_widget.xml
index 704401a..90883c5 100644
--- a/res/layout/apps_customize_widget.xml
+++ b/res/layout/apps_customize_widget.xml
@@ -63,7 +63,7 @@
     </LinearLayout>
 
     <!-- The icon of the widget. -->
-    <ImageView
+    <com.android.launcher2.PagedViewWidgetImageView
         android:id="@+id/widget_preview"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"