Delete unifi-os-server (ct) after migration to ProxmoxVE (#1295)

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

frontend/public/json/unifi-os-server.json

@@ -1,35 +0,0 @@
-{
-    "name": "Unifi OS Server",
-    "slug": "unifi-os-server",
-    "categories": [
-        2
-    ],
-    "date_created": "2026-01-16",
-    "type": "vm",
-    "updateable": true,
-    "privileged": false,
-    "interface_port": 11443,
-    "documentation": "https://help.ui.com/hc/en-us",
-    "website": "https://www.ui.com/",
-    "logo": "https://cdn.jsdelivr.net/gh/selfhst/icons@main/webp/ubiquiti-unifi.webp",
-    "config_path": "",
-    "description": "Unifi OS Server is the operating system that powers Ubiquiti's UniFi line of network devices. It provides a centralized platform for managing and monitoring UniFi access points, switches, and security gateways, offering features such as network configuration, device provisioning, and performance analytics.",
-    "install_methods": [
-        {
-            "type": "default",
-            "script": "ct/unifi-os-server.sh",
-            "resources": {
-                "cpu": 2,
-                "ram": 4096,
-                "hdd": 20,
-                "os": "debian",
-                "version": "13"
-            }
-        }
-    ],
-    "default_credentials": {
-        "username": null,
-        "password": null
-    },
-    "notes": []
-}