Update registry.json

removal of profanity filter, trying to download will result in a infinite download loop and will stop any plugin from loading/break the usage of removing/adding new plugins

Author: lorenzo132

plugins/registry.json

@@ -1,13 +1,4 @@
 {
-    "profanity-filter": {
-        "repository": "kyb3r/modmail-plugins",
-        "branch": "master",
-        "description": "Checks for profanity in a message using machine learning and deletes it.",
-        "bot_version": "2.20.1",
-        "title": "Profanity Filter Plugin",
-        "icon_url": "https://i.imgur.com/951szZ3.jpg",
-        "thumbnail_url": "https://i.imgur.com/951szZ3.jpg"
-    },
     "dragory-migrate": {
         "repository": "kyb3r/modmail-plugins",
         "branch": "master",