Remove stray reference to removed section

Author: fantasai

selectors3/Overview.html

@@ -785,8 +785,7 @@ <h4><a name=typenmsp>6.1.1. Type selectors and namespaces</a></h4>
 href="http://www.w3.org/TR/REC-xml-names/#NT-LocalPart">local part</a>
 of the element's <a
 href="http://www.w3.org/TR/REC-xml-names/#ns-qualnames">qualified
-name</a>. See below for notes about <a href="#downlevel">matching
-behaviors in down-level clients</a>.</p>
+name</a>.</p>
 
 <p>In summary:</p>