Removed all unused desktops (bnc#864295)
Merge pull request #10 from kobliha/cleanup_desktops

Removed all unused desktops (bnc#864295)
Removed gdm and gnome-shell-classic packages from required packages

- they are recommended by patterns (bnc#862756)
Added empty list of packages

- The current implementation needs to have a defined list of packages
- Even if empty
Merge pull request #11 from kobliha/no_gnome-shell-classic

Removed gdm and gnome-shell-classic packages from required packages