remove uptime kuma

https://github.com/awesome-selfhosted/awesome-selfhosted/issues/3166
already listed at https://github.com/awesome-selfhosted/awesome-selfhosted#status--uptime-pages

README.md

@@ -455,7 +455,6 @@
 
 * [vigil](https://github.com/valeriansaliou/vigil) -  Microservices Status Page. Monitors a distributed infrastructure and sends alerts to Slack. Written in Rust.
 * [Statping-ng](https://github.com/statping-ng/statping-ng) - Status page system written in Go (Active fork of statping).
-* [Uptime Kuma](https://github.com/louislam/uptime-kuma) - Self-hosted status page similar to "Uptime Robot".
 * [netcheck](https://demo.ncheck.eu/#/info) – Simple ping status system written in Java, similar to Pingdom and StatusCake.
 
 ### Metric & Metric Collection