Remove Petio Script (#8071)

* Delete install/petio-install.sh

* Delete ct/petio.sh

* Delete frontend/public/json/petio.json

frontend/public/json/petio.json

@@ -1,35 +0,0 @@
-{
-  "name": "Petio",
-  "slug": "petio",
-  "categories": [
-    13
-  ],
-  "date_created": "2024-06-12",
-  "type": "ct",
-  "updateable": true,
-  "privileged": false,
-  "interface_port": 7777,
-  "documentation": "https://docs.petio.tv/",
-  "website": "https://petio.tv/",
-  "logo": "https://cdn.jsdelivr.net/gh/selfhst/icons/webp/petio.webp",
-  "config_path": "",
-  "description": "Petio is a third party companion app available to Plex server owners to allow their users to request, review and discover content.",
-  "install_methods": [
-    {
-      "type": "default",
-      "script": "ct/petio.sh",
-      "resources": {
-        "cpu": 2,
-        "ram": 1024,
-        "hdd": 4,
-        "os": "ubuntu",
-        "version": "20.04"
-      }
-    }
-  ],
-  "default_credentials": {
-    "username": null,
-    "password": null
-  },
-  "notes": []
-}