Remove Extra Domains From Login Options?

Remove Extra Domains From Login Options?

For some reason after enabling domain login a collection of extra domains/workgroups appear.

Is there a way to limit the options which appear to just Local and the Domain.

Below is a example of what is there
COSTCO
COSTCO.COM      (Domain)
WORK GROUP
Local Authentication

Failing the ability to remove the additional options is it possible to set the default?

Thanks

                  New to ADSelfService Plus?