[css-fonts-5] remove not ready warning

Author: svgeesus

css-fonts-5/Overview.bs

@@ -16,7 +16,6 @@ Abstract: This specification defines modifications to the existing <a href="http
 Repository: w3c/csswg-drafts
 Inline Github Issues: title
 Default Highlight: css
-Warning: Not Ready
 </pre>
 
 <pre class="link-defaults">