[css-grid-1] Simplify condition by removing no-op per #3565 (comment)

Author: fantasai

css-grid-1/Overview.bs

@@ -3976,9 +3976,9 @@ Resolve Intrinsic Track Sizes</h3>
 					(which could be the argument to a ''fit-content()'' track sizing function)
 					if that is <a lt="fixed sizing function">fixed</a>
 					<!-- ,
-					else by it's own <a lt="min-content contribution">min-</a>/<a>max-content contribution</a>
+					else by it's own <a>min-content contribution</a>
 					if the <a>max track sizing function</a>
-					is ''grid-template-columns/min-content''/''grid-template-columns/max-content'';-->
+					is ''grid-template-columns/min-content'';-->
 					and ultimately floored by its <a>minimum contribution</a> (defined below).
 
 					Otherwise,