This commit removes an unwanted `bg-primary` class applied to the change
password modal, making it weird and unconsistent regarding others modals
across Odoo.
=========
Steps to reproduce
=========
> Open a database
> Click on your avatar in the top right corner
> Click on `Preferences`
> Go to `Account Security`
> Click on `Change password`
>> The modal has a `bg-primary` class, making it look purple.
task-3836699
closesodoo/odoo#160462
X-original-commit: 2813540aba7556b915185e482cbb6d9500db7af1
Signed-off-by: Chrysanthe Gomrée (chgo) <chgo@odoo.com>
Signed-off-by: Pierre Paridans (app) <app@odoo.com>