[css-grid-1] Remove superfluous phrase about base size. #3706

Author: fantasai

css-grid-1/Overview.bs

@@ -4162,8 +4162,7 @@ Resolve Intrinsic Track Sizes</h3>
 					a <a>max track sizing function</a> equal to their <a>min track sizing function</a>
 				<li>
 					distributing space <em>only</em> to <a>flexible tracks</a>
-					(i.e. treating all other tracks as having a <a>fixed sizing function</a>
-					of their current <a>base size</a>)
+					(i.e. treating all other tracks as having a <a>fixed sizing function</a>)
 				<li>
 					distributing space to such tracks
 					according to the ratios of their <a>flexible sizing functions</a>