[quadrapassel] Remove relief from pause/play button

[Mario Wenzel <mariowenzel src gnome org>]

commit aae2cda55831b55cd52d9858b2a86b12ef7afca3
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Wed Jan 15 19:13:02 2014 -0600

    Remove relief from pause/play button
    
    This looks a bit better and is more consistent with the other games.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=722305

 src/quadrapassel.vala |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/quadrapassel.vala b/src/quadrapassel.vala
index 94daba1..0dfa4d6 100644
--- a/src/quadrapassel.vala
+++ b/src/quadrapassel.vala
@@ -140,6 +140,7 @@ public class Quadrapassel : Gtk.Application
         pause_play_button.add (pause_play_button_image);
         pause_play_button.action_name = "app.new-game";
         pause_play_button.hexpand = true;
+        pause_play_button.relief = Gtk.ReliefStyle.NONE;
         pause_play_button_image.show ();
         pause_play_button.show ();