remove EpochTalk (unmaintained since 2021) (#3744)

- ref. https://github.com/awesome-selfhosted/awesome-selfhosted/issues/3558
- WARNING:awesome_lint.py: EpochTalk: last updated -709 days, 5:54:10.927487 ago, older than 365 days

README.md

@@ -540,7 +540,6 @@ Simple deployment of [E-mail](https://en.wikipedia.org/wiki/Email) servers, e.g.
 - [Discourse](https://www.discourse.org/) - Advanced forum / community solution based on Ruby and JS. ([Demo](https://try.discourse.org/), [Source Code](https://github.com/discourse/discourse)) `GPL-2.0` `Ruby`
 - [Elgg](https://elgg.org/) - Powerful open source social networking engine. ([Source Code](https://github.com/Elgg/Elgg)) `GPL-2.0` `PHP`
 - [Enigma 1/2 BBS](https://nuskooler.github.io/enigma-bbs/) - Enigma 1/2 is a modern, multi-platform BBS engine with unlimited "callers" and legacy DOS door game support. ([Demo](https://l33t.codes/xibalba-bbs/), [Source Code](https://github.com/NuSkooler/enigma-bbs)) `BSD-2-Clause` `Shell/Docker/Nodejs`
-- [EpochTalk](https://github.com/epochtalk/epochtalk) - Next Generation Forum Software. `MIT` `Nodejs`
 - [Flarum](https://flarum.org) - Delightfully simple forums. Flarum is the next-generation forum software that makes online discussion fun again. ([Source Code](https://github.com/flarum/flarum)) `MIT` `PHP`
 - [FlaskBB](https://flaskbb.org/) - FlaskBB is forum software written in Python using the microframework Flask. You can easily create new topics, posts and send other users private messages. It also includes basic administration and moderation tools. ([Source Code](https://github.com/flaskbb/flaskbb)) `BSD-3-Clause` `Python`
 - [Friendica](https://friendi.ca/) - Social Communication Server. ([Source Code](https://github.com/friendica/friendica)) `AGPL-3.0` `PHP`