Allow custom prerequisites to be restricted by race.

OpenRA.Mods.RA/Player/TechTree.cs

@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2013 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2014 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,
@@ -155,23 +155,4 @@ namespace OpenRA.Mods.RA
 			}
 		}
 	}
-
-	public class ProvidesCustomPrerequisiteInfo : ITraitInfo
-	{
-		public readonly string Prerequisite;
-
-		public object Create(ActorInitializer init) { return new ProvidesCustomPrerequisite(this); }
-	}
-
-	public class ProvidesCustomPrerequisite : ITechTreePrerequisite
-	{
-		ProvidesCustomPrerequisiteInfo info;
-
-		public IEnumerable<string> ProvidesPrerequisites { get { yield return info.Prerequisite; } }
-
-		public ProvidesCustomPrerequisite(ProvidesCustomPrerequisiteInfo info)
-		{
-			this.info = info;
-		}
-	}
 }