[gtk+] gtk3-demo: Don't set xalign of GtkCheckButton

[Timm Bäder <baedert src gnome org>]

commit 3fc5d09890e453dd85e94b78f4649abeb2fce53f
Author: Timm Bäder <mail baedert org>
Date:   Tue Jul 21 20:23:09 2015 +0200

    gtk3-demo: Don't set xalign of GtkCheckButton
    
    It's deprecated and doesn't make a difference here.

 demos/gtk-demo/stack.ui |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/demos/gtk-demo/stack.ui b/demos/gtk-demo/stack.ui
index 292bed8..3ba841d 100644
--- a/demos/gtk-demo/stack.ui
+++ b/demos/gtk-demo/stack.ui
@@ -45,7 +45,6 @@
                 <property name="visible">True</property>
                 <property name="can_focus">True</property>
                 <property name="receives_default">False</property>
-                <property name="xalign">0</property>
                 <property name="draw_indicator">True</property>
                 <property name="halign">center</property>
                 <property name="valign">center</property>