[five-or-more] Remove unused field

[Robert Roth <robertroth src gnome org>]

commit 8b2d88b476272ae5383070562b4b2de7bccd6a74
Author: Robert Roth <robert roth off gmail com>
Date:   Sun Sep 30 20:45:33 2018 +0300

    Remove unused field

 src/view.vala | 2 --
 1 file changed, 2 deletions(-)
---
diff --git a/src/view.vala b/src/view.vala
index 69d82a5..4142466 100644
--- a/src/view.vala
+++ b/src/view.vala
@@ -28,7 +28,6 @@ public class View : Gtk.DrawingArea
     private Settings settings;
     private Game? game = null;
     private ThemeRenderer? theme = null;
-    private Gdk.RGBA background_color;
     private Gtk.StyleContext cs;
     private Gtk.CssProvider provider;
 
@@ -61,7 +60,6 @@ public class View : Gtk.DrawingArea
         cs.add_class ("game-view");
         cs.add_provider (provider, Gtk.STYLE_PROVIDER_PRIORITY_USER);
 
-        background_color = Gdk.RGBA ();
         set_background_color ();
         settings.changed[FiveOrMoreApp.KEY_BACKGROUND_COLOR].connect (() => {
             set_background_color ();