x11: Drop error trap helpers
They are no longer that useful as they end up calling mtk functions nowadays
Followup of !3230 (merged) Related GNOME Shell PR: gnome-shell!3087 (merged)
Edited by Bilal Elmoussaoui
They are no longer that useful as they end up calling mtk functions nowadays
Followup of !3230 (merged) Related GNOME Shell PR: gnome-shell!3087 (merged)