feat: Drop Radicale checks

Remove the Radicale service entry and related auth configuration now that updates are handled by the OS package manager.

services.yaml

@@ -83,19 +83,6 @@ services:
     upstream_latest_extract:
       type: jsonpath
       value: $.tag_name
-  - name: Radicale WebDav
-    base_url: https://dav.jeena.net/.web/
-    current_version_url: https://dav.jeena.net/version
-    current_version_extract:
-      type: jsonpath
-      value: $.version
-    current_version_headers:
-      Authorization: Basic {env:RADICALE_BASIC_AUTH}
-    upstream_latest_version_url: https://api.github.com/repos/Kozea/Radicale/releases/latest
-    upstream_latest_extract:
-      type: jsonpath
-      value: $.tag_name
-    notes: /version returns 401 without auth; uses Basic auth.
   - name: FreshRSS
     base_url: https://rss.jeena.net/
     current_version_url: https://rss.jeena.net/i/?a=about