Hide the default playlists in the navigation on the left side of Youtube
The following features can be enabled in the Tampermonkey menu:
- Hide default playlists
- Auto show all playlists
- Sort playlists alphabetically
This is a userscript for your browser. It's primarily designed for Firefox and Chrome with
Tampermonkey 
or
FireMonkey .
General information about userscripts and how to use them can be found at openuserjs.org/about/Userscript-Beginners-HOWTO.
If you already have a userscript extension installed, you can click to install this script.