Adjust credits

OpenPGP-Keychain/src/main/res/raw/help_about.html

@@ -19,9 +19,8 @@ And don't add newlines before or after p tags because of transifex -->
 </ul>
 <h2>Developers APG 1.x</h2>
 <ul>
-<li>'Thialfihar' (Lead developer)</li>
+<li>Thialfihar (Lead developer)</li>
 <li>'Senecaso' (QRCode, sign key, upload key)</li>
-<li>Oliver Runge</li>
 <li>Markus Doits</li>
 </ul>