Revert "In RemoveCellsFromPlayerShroud, don't call RemoveSource unless required."

This reverts commit 86b9227577.

This commit relied on the relationship not changing, but when a player is defeated their relationship can change due to becoming a spectator. This can cause a crash if the shroud is not removed. Revert the commit to resolve this crash.

OpenRA.Mods.Common/Effects/RevealShroudEffect.cs

@@ -49,13 +49,7 @@ namespace OpenRA.Mods.Common.Effects
 			p.Shroud.AddSource(this, sourceType, uv);
 		}
 
-		void RemoveCellsFromPlayerShroud(Player p)
-		{
-			if (!validStances.HasRelationship(player.RelationshipWith(p)))
-				return;
-
-			p.Shroud.RemoveSource(this);
-		}
+		void RemoveCellsFromPlayerShroud(Player p) { p.Shroud.RemoveSource(this); }
 
 		PPos[] ProjectedCells(World world)
 		{