How to remove service from accounts UI?


I have currently installed two packages for accounts UI. First one is accounts-facebook and another is scholtzm:accounts-steam.

Currently I can register with Facebook and Steam service too. But how can I remove steam service from accounts UI dropdown ?

I just want people to register with Facebook FIRST and then STEAM. When a user is registered with Facebook, next step he has to do is to login with steam.

But in the accounts UI dropdown steam service comes anyway. How can I remove it from dropdown ?

Thank you!