How do I remove the hand-wave emoji from the login ui?

This does not appear to be possible on the Fakebook theme.

I see the .waving-hand class is in the login.sccs file, though the fakebook theme does not appear to modify or include this file.

I’ve tried to manually add this change in as a theme component in the css, though I’ve had no luck on this. Any advice? Should I submit a PR to the Fakebook theme creator?