Remove mention of XMPP

_includes/sections/instant-messenger.html

@@ -123,14 +123,6 @@ <h3>Disadvantages</h3>
   <h4>Worth Mentioning</h4>
 
   <ul>
-    <li><a href="https://xmpp.org/about">XMPP</a> (Extensible Messaging and Presence Protocol) is an open-source communications protocol that began development in 1999. Since then, XMPP has been extended by the publishing of XEPs (XMPP Extension Protocols). <a href="https://conversations.im/omemo/">OMEMO</a> is the most popular XEP (XMPP extension) for E2EE. Clients are developed by the community and not by the XSF (XMPP Standards Foundation). <span class="badge badge-warning" data-toggle="tooltip" title="VoIP and file transfers/names may not be end-to-end encrypted.">Inconsistent E2EE</span></li>
-    <ul>
-      <li><a href="https://gajim.org/">Gajim</a></li>
-      <li><a href="https://conversations.im">Conversations</a></li>
-      <li><a href="https://siskin.im/">Siskin</a></li>
-      <li>Other <a href="https://omemo.top">OMEMO</a> capable clients for XMPP.</li>
-    </ul>
-    <li><a href="https://www.kontalk.org">Kontalk</a> is a community-driven instant messaging network based on XMPP.</li>
     <li><a href="https://status.im">Status.im</a> - Encrypted instant messenger with an integrated <a href="https://en.wikipedia.org/wiki/Ethereum">Ethereum</a> wallet (cryptocurrency) that also includes support for <a href="https://our.status.im/tag/dapps">DApps (decentralized apps)</a> (web apps in a curated store). Uses the <a href="https://our.status.im/status-launches-private-peer-to-peer-messaging-protocol/">Waku protocol (a fork of Whisper)</a> for P2P communication. Only available for iOS and Android.</li>
   </ul>