Delete coredns (ct) after migration to ProxmoxVE (#1762)

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

json/coredns.json

@@ -1,52 +0,0 @@
-{
-  "name": "CoreDNS",
-  "slug": "coredns",
-  "categories": [
-    5
-  ],
-  "date_created": "2026-03-27",
-  "type": "ct",
-  "updateable": true,
-  "privileged": false,
-  "interface_port": null,
-  "documentation": "https://coredns.io/manual/toc/",
-  "website": "https://coredns.io/",
-  "logo": "https://cdn.jsdelivr.net/gh/selfhst/icons@main/webp/coredns.webp",
-  "description": "CoreDNS is a modern, lightweight, and highly extensible DNS server with a plugin-driven architecture. It is the default DNS engine for Kubernetes and ideal as a local authoritative DNS server for homelabs.",
-  "install_methods": [
-    {
-      "type": "default",
-      "script": "ct/coredns.sh",
-      "config_path": "/etc/coredns/Corefile",
-      "resources": {
-        "cpu": 1,
-        "ram": 256,
-        "hdd": 1,
-        "os": "Debian",
-        "version": "13"
-      }
-    },
-    {
-      "type": "alpine",
-      "script": "ct/alpine-coredns.sh",
-      "config_path": "/etc/coredns/Corefile",
-      "resources": {
-        "cpu": 1,
-        "ram": 256,
-        "hdd": 1,
-        "os": "Alpine",
-        "version": "3.23"
-      }
-    }
-  ],
-  "default_credentials": {
-    "username": null,
-    "password": null
-  },
-  "notes": [
-    {
-      "text": "Configuration file is located at /etc/coredns/Corefile",
-      "type": "info"
-    }
-  ]
-}