Remove the ability for alternative sign-in after SSO is enabled

We need to enable Multifactor SSO for our enterprise by April 2020. We would like the ability to remove the alternative means of signing in. Is it possible to move the "Log in with email and password" now that SSO is enabled? If we can disable that via from the UI, this will allow us to meet the required date and not have to incur a DUO license fee for our users.