range: Document some style properties as deprecated
range: Document some style properties as deprecated

Remove dead code dealing with the arrow-displacement-x/y style
properties, and document them as deprecated.

grubersjoe/adwaita,grubersjoe/adwaita,grubersjoe/adwaita,grubersjoe/adwaita,grubersjoe/adwaita,grubersjoe/adwaita,grubersjoe/adwaita,grubersjoe/adwaita