Skip notifyDisplayEmpty if no longer the selected bubble

Bug: 137214536
Test: Manually: install go/bubbles-app. Click 'add bubble',
        expand stack, click 'Auto Expand Bubble',
	select first bubble. Click finish.
Change-Id: Ia8c194513a62a32a7c1db4fb01bf943a637adae3
diff --git a/packages/SystemUI/src/com/android/systemui/bubbles/BubbleController.java b/packages/SystemUI/src/com/android/systemui/bubbles/BubbleController.java
index d79f651..7d9bb07 100644
--- a/packages/SystemUI/src/com/android/systemui/bubbles/BubbleController.java
+++ b/packages/SystemUI/src/com/android/systemui/bubbles/BubbleController.java
@@ -938,8 +938,6 @@
             }
             if (expandedBubble.getDisplayId() == displayId) {
                 mBubbleData.setExpanded(false);
-            }
-            if (expandedBubble.getExpandedView() != null) {
                 expandedBubble.getExpandedView().notifyDisplayEmpty();
             }
         }