Remove Joel from the list of volunteers for the code of conduct

Because he only attends on an infrequent basis these days meaning that
he is much less familiar to members and so less likely to be trusted
should someone wish to contact a volunteer with concerns about an
incident.

Author: mocoso

code-of-conduct/index.html

@@ -34,7 +34,6 @@ <h3>Incident Handling</h3>
 <h3>Volunteer team</h3>
 
 <ul>
-  <li>Joel Chippindale (<a href="https://twitter.com/joelchippindale">@joelchippindale</a>, <a href="ma&#105;lto&#58;j&#37;&#54;Fel&#37;&#52;0mocos&#111;&#46;c&#111;&#46;u%&#54;&#66;">&#106;o&#101;l&#64;m&#111;cos&#111;&#46;c&#111;&#46;u&#107;</a>)</li>
   <li>Paul Mucur (<a href="https://twitter.com/mudge">@mudge</a>, <a href="mailt&#111;&#58;mu%64&#103;e%&#52;0%&#54;Dudge%2En%61me">mud&#103;e&#64;mu&#100;ge&#46;&#110;&#97;m&#101;</a>)</li>
 </ul>