rm Qpopper (dead)

README.md

@@ -359,7 +359,6 @@
 * [Courier IMAP/POP3](http://www.courier-mta.org/imap/) - Fast, scalable, enterprise IMAP and POP3 server.
 * [Cyrus IMAP/POP3](http://cyrusimap.org/) - Intended to be run on sealed servers, where normal users are not permitted to log in.
 * [Dovecot](http://www.dovecot.org/) - IMAP and POP3 server written primarily with security in mind.
-* [Qpopper](http://www.eudora.com/products/unsupported/qpopper/) - One of the oldest and most popular server implementations of POP3.
 
 ### MTA (SMTP)
 *Mail Transfer Agents (SMTP servers).*