[gbrainy] Remove unused var

[Jordi Mas <jmas src gnome org>]

commit d6b0ef260096cd801c07006ff192f76de57be16e
Author: Jordi Mas <jmas softcatala org>
Date:   Mon May 30 20:44:01 2011 +0200

    Remove unused var

 src/Clients/Classical/Widgets/GameDrawingArea.cs |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/src/Clients/Classical/Widgets/GameDrawingArea.cs b/src/Clients/Classical/Widgets/GameDrawingArea.cs
index 230b72e..31eb4fd 100644
--- a/src/Clients/Classical/Widgets/GameDrawingArea.cs
+++ b/src/Clients/Classical/Widgets/GameDrawingArea.cs
@@ -177,7 +177,6 @@ namespace gbrainy.Clients.Classical.Widgets
 			if (UseSolutionArea == false || String.IsNullOrEmpty (Solution) == true)
 				return;
 
-			const double box_margin = 0.00;
 			double box_height_scaled = solution_high / (double) height;
 
 			cr.Save ();