Drop old shredos entry

endpoints.yml

@@ -1136,12 +1136,6 @@ endpoints:
     - vmlinuz
     os: kodachi
     version: '8'
-  shredos:
-    path: /asset-mirror/releases/download/v2020.05.012_x86-64_0.31-fa7b79b5/
-    files:
-    - shredos
-    os: shredos
-    version: current
   ubuntu-21.04-default-squash:
     path: /ubuntu-squash/releases/download/21.04-38565a8b/
     files: