How to remove superuser on the system in Django?
If you haven't setup an additional database for your project and you have used django-admin startproject you'll just have a standard django setup, and you will be using sqlite. With this setup, your database is stored in a file in your root directory (for the project) called db.sqlite3.
This is where the super-user you have created will be stored. So it does not matter if the virtualenv was activated or not. Your superuser will have been created in the right place. 
TLDR: No need to worry, the superuser you created will most likely be in the right place.
I was doing some project by using django
and I realized that I forgot to activate virtualenv.
I already made some changes and applied it not on the venv,
and created superuser on the system.

How to find any changes on the system?
how to remove superuser that I made on the system
and what are the cmd commands for that?