[gnome-calendar] source-dialog: remove unused code

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 72c2988ff3d4db8505bcce5014227227e48c6785
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Wed Jul 15 21:10:27 2015 -0300

    source-dialog: remove unused code

 data/ui/source-dialog.ui |    4 ----
 1 files changed, 0 insertions(+), 4 deletions(-)
---
diff --git a/data/ui/source-dialog.ui b/data/ui/source-dialog.ui
index d7589e1..756eb45 100644
--- a/data/ui/source-dialog.ui
+++ b/data/ui/source-dialog.ui
@@ -17,10 +17,6 @@
       <object class="GtkBox" id="vbox">
         <property name="orientation">vertical</property>
         <property name="border_width">0</property>
-        <child internal-child="action_area">
-          <object class="GtkButtonBox" id="dialog-action_area1">
-          </object>
-        </child>
         <child>
           <object class="GtkOverlay" id="overlay">
             <property name="visible">True</property>