[hyena] ListView: Remove workaround for bug on mono 1.9.1

[Bertrand Lorentz <blorentz src gnome org>]

commit 790e976fece44cbe84f1e631e8ad66f102b45c37
Author: Bertrand Lorentz <bertrand lorentz gmail com>
Date:   Thu Jun 12 17:28:53 2014 +0200

    ListView: Remove workaround for bug on mono 1.9.1
    
    We now require a more recent mono version, so we don't need that
    anymore.

 .../Hyena.Data.Gui/ListView/ListView_Rendering.cs  |    7 +------
 1 files changed, 1 insertions(+), 6 deletions(-)
---
diff --git a/Hyena.Gui/Hyena.Data.Gui/ListView/ListView_Rendering.cs 
b/Hyena.Gui/Hyena.Data.Gui/ListView/ListView_Rendering.cs
index 3ac2d60..713f949 100644
--- a/Hyena.Gui/Hyena.Data.Gui/ListView/ListView_Rendering.cs
+++ b/Hyena.Gui/Hyena.Data.Gui/ListView/ListView_Rendering.cs
@@ -69,12 +69,7 @@ namespace Hyena.Data.Gui
             get { return theme; }
         }
 
-        // Using an auto-property here makes the build fail with mono 1.9.1 (bnc#396633)
-        private bool do_not_render_null_model;
-        public bool DoNotRenderNullModel {
-            get { return do_not_render_null_model; }
-            set { do_not_render_null_model = value; }
-        }
+        public bool DoNotRenderNullModel { get; set; }
 
         protected override void OnStyleUpdated ()
         {