Simplifying logic to create/destroy hardware layers in All Apps

Bug # 3422984
diff --git a/src/com/android/launcher2/PagedViewCellLayout.java b/src/com/android/launcher2/PagedViewCellLayout.java
index d64f3c9..57d41fa 100644
--- a/src/com/android/launcher2/PagedViewCellLayout.java
+++ b/src/com/android/launcher2/PagedViewCellLayout.java
@@ -141,6 +141,7 @@
     public void removeAllViewsOnPage() {
         mChildren.removeAllViews();
         mHolographicChildren.removeAllViews();
+        destroyHardwareLayers();
     }
 
     @Override