[gtk+] widget-factory: Use :relief=none, not class .flat

[Daniel Boles <dboles src gnome org>]

commit 322d9ca550d8848f456907dfbec98a5f8320bb62
Author: Daniel Boles <dboles src gnome org>
Date:   Sat May 13 19:28:34 2017 +0100

    widget-factory: Use :relief=none, not class .flat
    
    The rest of the ui file follows that convention.

 demos/widget-factory/widget-factory.ui |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/demos/widget-factory/widget-factory.ui b/demos/widget-factory/widget-factory.ui
index 361f5ad..1650689 100644
--- a/demos/widget-factory/widget-factory.ui
+++ b/demos/widget-factory/widget-factory.ui
@@ -3172,9 +3172,9 @@ microphone-sensitivity-medium-symbolic</property>
                             <property name="valign">center</property>
                             <property name="popover">notebook_info_popover</property>
                             <property name="icon-name">emblem-important-symbolic</property>
+                            <property name="relief">none</property>
                             <style>
                               <class name="circular"/>
-                              <class name="flat"/>
                             </style>
                           </object>
                         </child>