Improve or remove warning when hiding native login form

Is your feature request related to a problem? Please describe. Since it's possible to disable the native login form. This is a greate feature if you solely rely on SSO to login as users are less confused where to enter their credentials. The problem for me is that the current error message that replaces the form is puzzling for a user as it says: "Please contact your administrator." This is disruptive as the form not being there is expected and there is no reason to contact a system administrator if SSO works as expected.  and it is to be assumed that there is no information to the user or action from the user needed. Describe alternatives you've considered Replace the text and re-style the notecard so that it does not show a warning. It could use n…