[css-fonts-4] Close w3c#2859

Author: Chris Lilley

css-fonts-4/Overview.bs

@@ -1122,8 +1122,6 @@ Relative sizing: the 'font-size-adjust' property</h3>
 	Setting the line height too tightly can result in
 	overlapping lines of text in this situation.
 
-	Issue(2859): replace with an example of actually using font-size-adjust
-		rather than how to measure it
 
 	<div class="example">
 		Authors can calculate the <a>aspect value</a> for a given font