Delete app.json

app.json

@@ -1,13 +0,0 @@
-{
-  "name": "Invitarr",
-  "description": "This app does one little thing, and does it well.",
-  "repository": "https://github.com/Sleepingpirates/Invitarr",
-   "scripts": {
-    "predeploy": "git subtree push --prefix Docker Invitarr master"
-  },
-  "buildpacks": [
-    {
-      "url": "heroku/python"
-    }
-  ]
-}