Remove link to old htdig search engine

mailing-lists.html

@@ -36,13 +36,6 @@
     </p>
 
     <ul>
-      <li>
-	<a
-	href="/htdig/">Search
-	the mailing list archives</a>.  Thanks to <a href="mailto:Jochen
-	Eisinger <jochen.eisinger@gmx.de>">Jochen Eisinger</A> for making
-	available the search engine.
-      </li>
       <li>
 	<a
 	  href="http://lists.alioth.debian.org/pipermail/sane-devel/">sane-devel