Revert "Fix actors disappearing for a tick when swapping to the frozen actor."

This reverts commit 2eb090f153.

This fixes flicker for the actor->frozen transition, but then introduces the same flicker for the frozen->actor transition instead.

OpenRA.Game/Traits/Player/FrozenActorLayer.cs

@@ -253,10 +253,6 @@ namespace OpenRA.Traits
 		}
 
 		void ITick.Tick(Actor self)
-		{
-			// Update visibility at the end of the tick to make sure that
-			// the fog/shroud state has been updated for the tick
-			self.World.AddFrameEndTask(w =>
 		{
 			UpdateDirtyFrozenActorsFromDirtyBins();
 
@@ -285,7 +281,6 @@ namespace OpenRA.Traits
 
 			foreach (var fa in frozenActorsToRemove)
 				Remove(fa);
-			});
 		}
 
 		void UpdateDirtyFrozenActorsFromDirtyBins()