Delete matter-server (ct) after migration to ProxmoxVE (#1641)

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

json/matter-server.json

@@ -1,44 +0,0 @@
-{
-    "name": "Matter Server",
-    "slug": "matter-server",
-    "categories": [
-        17
-    ],
-    "date_created": "2026-03-24",
-    "type": "ct",
-    "updateable": true,
-    "privileged": false,
-    "interface_port": null,
-    "documentation": "https://github.com/matter-js/python-matter-server",
-    "website": "https://github.com/matter-js/python-matter-server",
-    "logo": "https://cdn.jsdelivr.net/gh/selfhst/icons@main/webp/home-assistant.webp",
-    "config_path": "",
-    "description": "Open Home Foundation Matter Server - an officially certified Matter controller serving as the foundation for Matter support in Home Assistant and other projects.",
-    "install_methods": [
-        {
-            "type": "default",
-            "script": "ct/matter-server.sh",
-            "resources": {
-                "cpu": 2,
-                "ram": 2048,
-                "hdd": 4,
-                "os": "Debian",
-                "version": "13"
-            }
-        }
-    ],
-    "default_credentials": {
-        "username": null,
-        "password": null
-    },
-    "notes": [
-        {
-            "text": "The Matter Server exposes a WebSocket API on port 5580 for integration with Home Assistant or other consumers.",
-            "type": "info"
-        },
-        {
-            "text": "For Thread-based devices, ensure IPv6 is properly configured on the host network.",
-            "type": "warning"
-        }
-    ]
-}