[lightsoff] Remove unnecessary decoration layout from ui

[Robert Roth <robertroth src gnome org>]

commit 60786fe06f265d44f26feb62ad7dffbf6cfb1c72
Author: Robert Roth <robert roth off gmail com>
Date:   Thu Oct 11 19:02:58 2018 +0300

    Remove unnecessary decoration layout from ui

 data/lightsoff.ui | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/data/lightsoff.ui b/data/lightsoff.ui
index 3c1b0d2..db244ce 100644
--- a/data/lightsoff.ui
+++ b/data/lightsoff.ui
@@ -11,7 +11,6 @@
         <property name="title" translatable="no">Puzzle X</property>
         <property name="subtitle" translatable="no">y moves</property>
         <property name="show_close_button">True</property>
-        <property name="decoration_layout">:close</property>
         <child>
           <object class="GtkMenuButton" id="menu_button">
             <property name="visible">True</property>