Revert "use TickRender() for RenderSprites and PaletteModifier"

This reverts commit 87fd576b26.

OpenRA.Mods.RA/TakeCover.cs

@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2014 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2011 The OpenRA Developers (see AUTHORS)
  * This file is part of OpenRA, which is free software. It is made
  * available to you under the terms of the GNU General Public License
  * as published by the Free Software Foundation. For more information,
@@ -9,7 +9,6 @@
 #endregion
 
 using OpenRA.GameRules;
-using OpenRA.Graphics;
 using OpenRA.Mods.RA.Render;
 using OpenRA.Traits;
 
@@ -99,13 +98,13 @@ namespace OpenRA.Mods.RA
 			return base.AllowIdleAnimation(self) && !tc.IsProne;
 		}
 
-		public override void TickRender(WorldRenderer wr, Actor self)
+		public override void Tick(Actor self)
 		{
 			if (wasProne != tc.IsProne)
 				dirty = true;
 
 			wasProne = tc.IsProne;
-			base.TickRender(wr, self);
+			base.Tick(self);
 		}
 	}
 }