[O] some publish html options gone

[Manuel Koell]

When I try to use `M-x customize` and search for `org-html-doctype` or
`org-html5-fancy` I don't get any match. I still have them in my custom.el
file, generated from an older emacs version (24.3). Were they removed?

Emacs: 25.1.50.2
Org: 8.3.2