Update homeserver.zelgray.work.yml

kitten is removed from the mirror

Author: soksanichenko

mirrors.d/homeserver.zelgray.work.yml

@@ -2,9 +2,6 @@
 name: homeserver.zelgray.work
 address:
   http: http://homeserver.zelgray.work/almalinux/
-address_optional:
-  kitten:
-    http: http://homeserver.zelgray.work/almalinux-kitten/
 update_frequency: 1h
 sponsor: homeserver.zelgray.work
 sponsor_url: homeserver.zelgray.work