use callback in queue step

Author: keithamus

css-position-4/Overview.bs

@@ -357,11 +357,8 @@ Top Layer Manipulation {#top-manip}
 
 	1. For each (element |el| and steps |afterRemoval|) in |doc|'s
 		[=pending top layer removals=]: if |el|'s computed value of
-		'overlay' is ''none'', or |el| is [=not rendered=]:
-
-		1. [=remove from the top layer immediately=] |el|.
-
-		2. Run |afterRemoval|.
+		'overlay' is ''none'', or |el| is [=not rendered=],
+		[=remove from the top layer immediately=] |el|, and |afterRemoval|.
 
 	Note: This is intended to be called during the "Update the Rendering" step
 	of HTML's rendering algorithm.