[gnome-mahjongg] Remove unused local variable

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 6f162c71c349c43f27c824522dbd1b638abd5e87
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Mon Mar 30 19:50:20 2015 -0500

    Remove unused local variable

 src/gnome-mahjongg.vala |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/src/gnome-mahjongg.vala b/src/gnome-mahjongg.vala
index e994208..44b7dc8 100644
--- a/src/gnome-mahjongg.vala
+++ b/src/gnome-mahjongg.vala
@@ -172,7 +172,6 @@ public class Mahjongg : Gtk.Application
         header_bar.pack_end (hint_button);
         header_bar.pack_end (pause_button);
 
-        var desktop = Environment.get_variable ("XDG_CURRENT_DESKTOP");
         if (!is_desktop ("Unity"))
         {
             header_bar.set_show_close_button (true);