remove WTFDYUM (archived)

Ref. https://github.com/Kickball/awesome-selfhosted/issues/1767

README.md

@@ -180,7 +180,6 @@ Some [Content Management System](#content-management-systems-cms) solutions also
 - [Sonarr](https://sonarr.tv/) - Automatic TV Shows downloader and manager for Usenet and BitTorrent. It can grab, sort and rename new episodes and automatically upgrade the quality of files already downloaded when a better quality format becomes available. ([Source Code](https://github.com/Sonarr/Sonarr)) `GPL-3.0` `C#`
 - [TriggerHappy](https://trigger-happy.readthedocs.io/en/latest/) - Open source clone of IFTTT, a bridge between your internet services. ([Source Code](https://github.com/foxmask/django-th)) `BSD-3-Clause` `Python`
 - [WebUI-aria2](https://github.com/ziahamza/webui-aria2) - Interface to interact with the aria2 downloader. Very simple to use, just download and open index.html in any web browser. ([Demo](http://ziahamza.github.io/webui-aria2/)) `MIT` `HTML5`
-- [WTFDYUM](https://www.wtfdyu.me/) `⚠` - Why The Fuck Did You Unfollow Me - Find out who stops following you on Twitter. ([Source Code](https://github.com/jchampemont/WTFDYUM)) `Apache-2.0` `Java`
 - [Zenbot 3](https://github.com/carlos8f/zenbot) - Zenbot is a lightweight, extendable, artificially intelligent trading bot for Bitcoin, Ether, Litecoin, and more. `MIT` `Node.js`
 
 ## Blogging Platforms