Drop reference to IRC

src/site/xdoc/index.xml

@@ -86,7 +86,7 @@
     <section name="Getting Involved">
       <p>
         The <a href="mail-lists.html">commons developer mailing list</a> is the main channel of communication for contributors. Please remember that the lists are shared between all commons components, so prefix your email by [bcel]. </p>
-      <p>You can also visit the #apache-commons IRC channel on irc.freenode.net or peruse <a href="issue-tracking.html">JIRA</a>.</p>
+      <p>You can also peruse <a href="issue-tracking.html">JIRA</a>.</p>
       <p>Alternatively you can go through the <em>Needs Work</em> tags in the <a href="taglist.html">TagList report</a>.</p>
       <p>If you'd like to offer up pull requests via GitHub rather than applying patches to JIRA, we have a <a href="https://github.com/apache/commons-bcel/">GitHub mirror</a>. </p>
     </section>