avoid an unnecessary overload

OpenRA.Game/Game.cs

@@ -391,7 +391,7 @@ namespace OpenRA
 
 			Bitmap bitmap;
 			using (new PerfTimer("Renderer.TakeScreenshot"))
-				bitmap = Renderer.TakeScreenshot();
+				bitmap = Renderer.Device.TakeScreenshot();
 
 			ThreadPool.QueueUserWorkItem(_ =>
 			{

OpenRA.Game/Renderer.cs

@@ -161,11 +161,6 @@ namespace OpenRA
 			DrawBatch(tempBuffer, 0, numVertices, type);
 		}
 
-		public Bitmap TakeScreenshot()
-		{
-			return Device.TakeScreenshot();
-		}
-
 		public void DrawBatch<T>(IVertexBuffer<T> vertices,
 			int firstVertex, int numVertices, PrimitiveType type)
 			where T : struct