Remove links from bottom of Chargrid Roguelike Tutorial 2020

Author: gridbugs

content/posts/newsletter-013/index.md

@@ -79,11 +79,6 @@ using chargrid for rendering and input handling. Reference code is available in
 [this git repo][https://github.com/stevebob/chargrid-roguelike-tutorial-2020]
 organized with one branch for each subsection.
 
-[Chargrid Roguelike Tutorial 2020][https://gridbugs.org/roguelike-tutorial-2020/]
-[Reference Code][https://github.com/stevebob/chargrid-roguelike-tutorial-2020]
-[Chargrid][https://github.com/stevebob/chargrid/]
-[@stevebob]: https://github.com/stevebob
-
 ## Library & Tooling Updates
 
 ## Popular Workgroup Issues in Github