If you’ll follow all the good practices of Mendix, then I guess no warnings will appear,
Just try to remove unnecessary actions and security rules.
Hope it helps!
Ah Yeah I See - It was the wrong choice to delete these module roles. All the warnings regard to Marketplace Modules which were not used in my project but were default if you start a new mendix project.
the solution was to hand over right in the project security to the specific module roles admin --> admin, user --> user
for Example: the check User was missing in the MendixSSO Module