If you make migrations for the first time since deleting your previous migrations, it doesn’t need to migrate anything new. This is normal. Run your server now and it should be fine…otherwise you can completely reset the database.
If you want to reset the database and recreate the auth_user table like what you would do when you set up your project at the very beginning, then either do: python manage.py flush to reset the database entirely, or delete the db.sqlite3 file and it will re-generate itself again. If you do this, you will need to make the superuser again with python manage.py createsuperuser