[gnome-system-monitor] Use new icon for gear menu

[Robert Roth <robertroth src gnome org>]

commit 16feb5b64aef341bbf04cad8b870670af2755293
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Jul 9 21:53:17 2014 -0400

    Use new icon for gear menu
    
    The open-menu-symbolic icon is the replacement for using
    emblem-system-symbolic for 'gear' menus in headerbars.
    
    See https://wiki.gnome.org/Initiatives/GnomeGoals/GearIcons
    
    https://bugzilla.gnome.org/show_bug.cgi?id=732981

 data/interface.ui |    8 +-------
 1 files changed, 1 insertions(+), 7 deletions(-)
---
diff --git a/data/interface.ui b/data/interface.ui
index 5a9bd0d..f152b60 100644
--- a/data/interface.ui
+++ b/data/interface.ui
@@ -27,16 +27,10 @@
             <property name="use_popover">True</property>
             <property name="valign">center</property>
             <property name="halign">end</property>
+            <property name="direction">none</property>
             <style>
               <class name="image-button"/>
             </style>
-            <child>
-              <object class="GtkImage" id="menu_button_image">
-                <property name="visible">True</property>
-                <property name="icon_size">1</property>
-                <property name="icon_name">emblem-system-symbolic</property>
-              </object>
-            </child>
           </object>
           <packing>
             <property name="pack_type">end</property>