Remove yewtu.be from Invidious instances list

Removed from now

Author: unixfox

docs/instances.md

@@ -11,7 +11,6 @@
 ## List of public Invidious Instances (sorted from oldest to newest):
 
 * [inv.nadeko.net](https://inv.nadeko.net) 🇨🇱 - Source code/changes: https://git.nadeko.net/Fijxu/invidious - CAPTCHA: Go-away
-* [yewtu.be](https://yewtu.be) 🇩🇪 - Source code/changes: https://github.com/yewtudotbe/invidious-custom
 * [invidious.nerdvpn.de](https://invidious.nerdvpn.de) 🇺🇦 - Source code/changes: https://git.nerdvpn.de/NerdVPN.de/invidious
 * [inv.thepixora.com](https://inv.thepixora.com) 🇨🇦
 * [yt.chocolatemoo53.com](https://yt.chocolatemoo53.com) 🇺🇸 - Source code/changes: https://git.nadeko.net/Fijxu/invidious