Removes EE differences for app/views/layouts/fullscreen.html.haml
What does this MR do?
Removes EE differences for app/views/layouts/fullscreen.html.haml
Closes https://gitlab.com/gitlab-org/gitlab-ee/issues/12550
Removes EE differences for app/views/layouts/fullscreen.html.haml
Closes https://gitlab.com/gitlab-org/gitlab-ee/issues/12550