GtkColorEditor: Remove old todo
GtkColorEditor: Remove old todo

Most of this is done, and the rest will not happen because
of this note.

jadahl/gtk,jigpu/gtk,jadahl/gtk,alexlarsson/gtk,jigpu/gtk,chergert/gtk,jigpu/gtk,jigpu/gtk,grubersjoe/adwaita,grubersjoe/adwaita,jadahl/gtk,davidgumberg/gtk,jigpu/gtk,chergert/gtk,alexlarsson/gtk,grubersjoe/adwaita,Adamovskiy/gtk,davidgumberg/gtk,davidgumberg/gtk,alexlarsson/gtk,Adamovskiy/gtk,jadahl/gtk,davidgumberg/gtk,grubersjoe/adwaita,chergert/gtk,jadahl/gtk,jigpu/gtk,alexlarsson/gtk,Adamovskiy/gtk,grubersjoe/adwaita,alexlarsson/gtk,davidgumberg/gtk,jadahl/gtk,chergert/gtk,davidgumberg/gtk,alexlarsson/gtk,Adamovskiy/gtk,grubersjoe/adwaita,jadahl/gtk,Adamovskiy/gtk,Adamovskiy/gtk,jigpu/gtk,alexlarsson/gtk,Adamovskiy/gtk,chergert/gtk,chergert/gtk,grubersjoe/adwaita,davidgumberg/gtk,jadahl/gtk,alexlarsson/gtk,chergert/gtk,davidgumberg/gtk,chergert/gtk,jigpu/gtk,Adamovskiy/gtk,grubersjoe/adwaita