Delete linkding (ct) after migration to ProxmoxVE (#1464)

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

frontend/public/json/linkding.json

@@ -1,40 +0,0 @@
-{
-    "name": "linkding",
-    "slug": "linkding",
-    "categories": [
-        12
-    ],
-    "date_created": "2026-02-09",
-    "type": "ct",
-    "updateable": true,
-    "privileged": false,
-    "interface_port": 9090,
-    "documentation": "https://linkding.link/",
-    "website": "https://linkding.link/",
-    "logo": "https://cdn.jsdelivr.net/gh/selfhst/icons@main/webp/linkding.webp",
-    "config_path": "/opt/linkding/.env",
-    "description": "linkding is a self-hosted bookmark manager that is designed to be minimal, fast, and easy to set up. It features a clean UI, tag-based organization, bulk editing, Markdown notes, read it later functionality, sharing, REST API, and browser extensions for Firefox and Chrome.",
-    "install_methods": [
-        {
-            "type": "default",
-            "script": "ct/linkding.sh",
-            "resources": {
-                "cpu": 2,
-                "ram": 1024,
-                "hdd": 4,
-                "os": "Debian",
-                "version": "13"
-            }
-        }
-    ],
-    "default_credentials": {
-        "username": "admin",
-        "password": null
-    },
-    "notes": [
-        {
-            "text": "Admin credentials are stored in /opt/linkding/.env",
-            "type": "info"
-        }
-    ]
-}