remove redirect.pizza

JS.ORG no longer uses this service.
But I'm still thankful for the partnership we had and really recommend their service.

README.md

@@ -32,5 +32,3 @@ To finish the procedure, make a pull request in this GitHub repository that adds
 
 ### Thanks
 ... to **[Cloudflare](https://www.cloudflare.com)** for their superb DNS service that makes this possible. While JS.ORG is using their free plan - to a shameless extent - they helped us more than once with some flexible solutions and extended quotas. Many thanks!
-
-Redirect service provided by **[redirect.pizza](https://redirect.pizza?utm_source=partner&utm_medium=link&utm_campaign=js.org)**