[css-2018] Remove duplicate content

Author: frivoal

css-2018/Overview.bs

@@ -697,7 +697,6 @@ Safe to Release pre-CR Exceptions</h2>
                and
                <a href="https://www.w3.org/TR/css-transforms-1/">CSS Transforms Level 1</a>.
 	       <li>The '':dir()'', '':lang()'', and '':focus-within'' pseudo-classes from [[SELECTORS-4]].
-	       <li>The ''min-content'' and ''max-content'' keywords from [[CSS-SIZING-3]].
        </ul>