Delete drawio (ct) after migration to ProxmoxVE (#1450)

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

frontend/public/json/drawio.json

@@ -1,35 +0,0 @@
-{
-  "name": "Draw.IO",
-  "slug": "drawio",
-  "categories": [
-    12
-  ],
-  "date_created": "2026-01-29",
-  "type": "ct",
-  "updateable": true,
-  "privileged": false,
-  "interface_port": 8080,
-  "documentation": "https://www.drawio.com/doc/",
-  "website": "https://www.drawio.com/",
-  "logo": "https://cdn.jsdelivr.net/gh/selfhst/icons@main/webp/draw-io.webp",
-  "config_path": "",
-  "description": "draw.io is a configurable diagramming and whiteboarding application, jointly owned and developed by draw.io Ltd (previously named JGraph) and draw.io AG.",
-  "install_methods": [
-    {
-      "type": "default",
-      "script": "ct/drawio.sh",
-      "resources": {
-        "cpu": 1,
-        "ram": 2048,
-        "hdd": 4,
-        "os": "Debian",
-        "version": "13"
-      }
-    }
-  ],
-  "default_credentials": {
-    "username": null,
-    "password": null
-  },
-  "notes": []
-}