strip 'locate game root' crap from game & editor; chrono both CAs

OpenRA.Editor/Form1.cs

@@ -37,7 +37,6 @@ namespace OpenRA.Editor
 		{
 			InitializeComponent();
 			AppDomain.CurrentDomain.AssemblyResolve += FileSystem.ResolveAssembly;
-			LocateGameRoot();
 
 			currentMod = mods.FirstOrDefault() ?? "ra";
 
@@ -213,17 +212,6 @@ namespace OpenRA.Editor
 			foreach (var p in palettes) { p.Visible = true; p.ResumeLayout(); }
 		}
 
-		void LocateGameRoot()
-		{
-			while (!Directory.Exists("mods"))
-			{
-				var current = Directory.GetCurrentDirectory();
-				if (Directory.GetDirectoryRoot(current) == current)
-					throw new InvalidOperationException("Unable to find game root.");
-				Directory.SetCurrentDirectory("..");
-			}
-		}
-
 		static Bitmap RenderTemplate(TileSet ts, ushort n, Palette p)
 		{
 			var template = ts.walk[n];