[gnome-shell] Revert "popupMenu: Make the section invisible if it has no visible children"

[Jasper St. Pierre <jstpierre src gnome org>]

commit fd9401cc6275049bde0f76c3f27bdbf3a92df403
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Mon Sep 9 15:54:17 2013 -0400

    Revert "popupMenu: Make the section invisible if it has no visible children"
    
    This reverts commit 5a0ac6c2ac5686c679988c2ca922ed758d2b19f1.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=707801

 js/ui/popupMenu.js |   13 ++-----------
 1 files changed, 2 insertions(+), 11 deletions(-)
---
diff --git a/js/ui/popupMenu.js b/js/ui/popupMenu.js
index 1fe78f7..e720c67 100644
--- a/js/ui/popupMenu.js
+++ b/js/ui/popupMenu.js
@@ -921,19 +921,10 @@ const PopupMenuSection = new Lang.Class({
         this.isOpen = true;
     },
 
-    _syncVisibility: function() {
-        this.actor.visible = !this.isEmpty();
-    },
-
     // deliberately ignore any attempt to open() or close(), but emit the
     // corresponding signal so children can still pick it up
-    open: function() {
-        this._syncVisibility();
-        this.emit('open-state-changed', true);
-    },
-    close: function() {
-        this.emit('open-state-changed', false);
-    },
+    open: function() { this.emit('open-state-changed', true); },
+    close: function() { this.emit('open-state-changed', false); },
 });
 
 const PopupSubMenuMenuItem = new Lang.Class({