Impacted versions: 11.0

Steps to reproduce: Just test on [Runbot](http://289106-11-0-b95622.runbot13.odoo.com/web?debug=1#id=&view_type=form&model=res.config.settings&action=110&menu_id=4) --> Uninstall website module --> Go to the Configuration page for any module > Make any changes and save it.

Current behavior: [Odoo Server Error - Validation Error]


![](https://image.prntscr.com/image/Gx3lGxX4Qg6lsxAhGxL5SQ.png)

Even the field which was added by website module (website_id) is also not removed from the database.

![](https://image.prntscr.com/image/Wn1C8lPdTg6frBLga0ZVqQ.png)

Expected behavior: Configuration should be applied.

Video/Screenshot link (optional):


from ast import literal_eval
from odoo import api, fields, models
from odoo.exceptions import AccessDenied
class ResConfigSettings(models.TransientModel):