Revert "Mention GitHub, Zola, and Netlify in the footer"
Revert "Mention GitHub, Zola, and Netlify in the footer"

This reverts commit 1ff397f568d36bacd50cd79ee52603f703b41cac.

phil-opp/blog_os,phil-opp/blog_os,phil-opp/blogOS,phil-opp/blog_os,phil-opp/blog_os,phil-opp/blogOS