[css-flexbox] Remove now-unnecessary parenthetical. w3c#6778

Author: tabatkins

css-flexbox-1/Overview.bs

@@ -3006,15 +3006,15 @@ Flex Item Intrinsic Size Contributions</h4>
 
 	The <strong>main-size <a>min-content contribution</a> of a <a>flex item</a></strong>
 	is the larger of its <em>outer</em> <a>min-content size</a>
-	and outer <a>preferred size</a> (its 'width'/'height' as appropriate)
+	and outer <a>preferred size</a>
 	if that is not ''width/auto'',
 	clamped by its <a>flex base size</a> as a maximum (if it is not growable)
 	and/or as a minimum (if it is not shrinkable),
 	and then further clamped by its <a lt="min main size">min</a>/<a>max main size</a>.
 
 	The <strong>main-size <a>max-content contribution</a> of a <a>flex item</a></strong>
 	is the larger of its <em>outer</em> <a>max-content size</a>
-	and outer <a>preferred size</a> (its 'width'/'height' as appropriate)
+	and outer <a>preferred size</a>
 	if that is not ''width/auto'',
 	clamped by its <a>flex base size</a> as a maximum (if it is not growable)
 	and/or as a minimum (if it is not shrinkable),