Removing "Default user" role feature

Hello

today I realized that since Foreman 1.5 the "Default user" role feature is
broken. It was used as a permission template when creating a new role but now
when we have role cloning ability it does not seem important anymore. Unless
anyone objects, we will remove it from Foreman instead of trying to fix it.
For more details what this role should do, you can read the manual [1]. More
information about the issue is described in redmine [2].

[1] Foreman :: Manual
[2] Bug #9425: Remove Default user role which does not work - Foreman

Thanks for any feedback

ยทยทยท -- Marek