Delete calibre-web (ct) after migration to ProxmoxVE (#1483)

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

frontend/public/json/calibre-web.json

@@ -1,44 +0,0 @@
-{
-  "name": "Calibre-Web",
-  "slug": "calibre-web",
-  "categories": [
-    4
-  ],
-  "date_created": "2026-02-09",
-  "type": "ct",
-  "updateable": true,
-  "privileged": false,
-  "interface_port": 8083,
-  "documentation": "https://github.com/janeczku/calibre-web/wiki",
-  "website": "https://github.com/janeczku/calibre-web",
-  "logo": "https://cdn.jsdelivr.net/gh/selfhst/icons@main/webp/flat/calibre-web.webp",
-  "config_path": "/opt/calibre-web/app.db",
-  "description": "Web app for browsing, reading and downloading eBooks from a Calibre database. Provides an attractive interface with mobile support, user management, and eBook conversion capabilities.",
-  "install_methods": [
-    {
-      "type": "default",
-      "script": "ct/calibre-web.sh",
-      "resources": {
-        "cpu": 2,
-        "ram": 2048,
-        "hdd": 8,
-        "os": "Debian",
-        "version": "13"
-      }
-    }
-  ],
-  "default_credentials": {
-    "username": null,
-    "password": null
-  },
-  "notes": [
-    {
-      "text": "No credentials are set by this script. Complete setup and create credentials in the first-run wizard.",
-      "type": "info"
-    },
-    {
-      "text": "Upload your Calibre library metadata.db during first setup wizard.",
-      "type": "info"
-    }
-  ]
-}