[aur-general] Removal request for `camlmix`

[Sergei Lebedev]

One more removal request -- `camlmix` [*] this time. I've addopted the
package and renamed it to `ocaml-camlmix`, to mach OCaml Packaging
Guideline.

Thanks!

[*] https://aur.archlinux.org/packages.php?ID=18885