I use Ubuntu 14.04 LTS version its login is very nice but after i installed cairo-dock, cairo-dock(Gnome) desktop environment got added and i can choose either unity or cairo-dock(Gnome) desktop environment but i don't want to use cairo-dock(Gnome) desktop environment so i want to remove that cairo-dock option from login page.
I tried removing it by uninstalling cairo-dock desktop integration packages but the cairo-dock core is also uninstalling with it but i want to use cairo-dock. I also tried removing it from the cairo-dock settings but when i open settings as standard user the gnome option is not accessable and when i open settings as root user the gnome option is not viewable.
so please can some suggest me how to remove that option from the login screen.
Thanks in advance.