Remove some misc redundancies

OpenRA.Mods.RA/World/DomainIndex.cs

@@ -147,8 +147,7 @@ namespace OpenRA.Mods.RA
 			var toProcess = new Stack<int>();
 			toProcess.Push(d1);
 
-			var i = 0;
-			while (toProcess.Count() > 0)
+			while (toProcess.Any())
 			{
 				var current = toProcess.Pop();
 				if (!transientConnections.ContainsKey(current))
@@ -163,7 +162,6 @@ namespace OpenRA.Mods.RA
 				}
 
 				visited.Add(current);
-				i += 1;
 			}
 
 			return false;

OpenRA.Mods.RA/World/PathfinderDebugOverlay.cs

@@ -17,7 +17,7 @@ using OpenRA.Traits;
 
 namespace OpenRA.Mods.RA
 {
-	class PathfinderDebugOverlayInfo : Traits.TraitInfo<PathfinderDebugOverlay> { }
+	class PathfinderDebugOverlayInfo : TraitInfo<PathfinderDebugOverlay> { }
 	class PathfinderDebugOverlay : IRenderOverlay, IWorldLoaded
 	{
 		Dictionary<Player, int[,]> layers;

OpenRA.Mods.RA/World/ResourceClaimLayer.cs

@@ -32,7 +32,7 @@ namespace OpenRA.Mods.RA
 			}
 		}
 
-		public void WorldLoaded(OpenRA.World w, WorldRenderer wr)
+		public void WorldLoaded(World w, WorldRenderer wr)
 		{
 			// NOTE(jsd): 32 seems a sane default initial capacity for the total # of harvesters in a game. Purely a guesstimate.
 			claimByCell = new Dictionary<CPos, ResourceClaim>(32);