Remove link to deleted Github account

Closes #391

Author: TobiGr

_posts/2020-03-29-newpipe-0.19.0-released.md

@@ -29,7 +29,7 @@ Part of the above feature is also the much improved `What's New` sidebar feed. B
 
 ## Mute button
 
-This release doesn't stop at channel groups, though. Thanks to [@karkaminski](https://github.com/karkaminski), NewPipe now has a mute button. [@B0pol](https://github.com/B0pol) molded it further into the shape you can experience it in now. _"But where can I find it?"_ you ask. Fear not, for I have prepared a gallery of screenshots. To access the pop-up and background player menus shown, you need to press on the notification from NewPipe.
+This release doesn't stop at channel groups, though. Thanks to @karkaminski, NewPipe now has a mute button. [@B0pol](https://github.com/B0pol) molded it further into the shape you can experience it in now. _"But where can I find it?"_ you ask. Fear not, for I have prepared a gallery of screenshots. To access the pop-up and background player menus shown, you need to press on the notification from NewPipe.
 
 <img class="no-flow vertical" src="{{ site.baseurl }}/img/screenshots/mute_main.jpg"/>
 <img class="no-flow img-responsive" src="{{ site.baseurl }}/img/screenshots/mute_back.jpg"/>