Yes. You can do a minimal installation from the DVD. I don't think this eliminated Gnome, but you can then customize the installation and remove all the desktops.
If' you've already installed you can
yum groupremove 'GNOME Desktop Environment'
To disable the gui starup ...
ln -s /lib/systemd/system/multi-user.target /etc/systemd/system/default.tar
---------- Post added at 08:44 AM ---------- Previous post was at 08:28 AM ----------
Personally I wouldn't worry about the CD vs DVD installation. Nor would I worry about removing all the GI packages unless yo are disk-space constrained. Instead just leave the packages intact and disable the gui startup.
That way you can start a remote gui session with something like ....
Xephyr -screen "1024x768" :2 2>/dev/null & \
DISPLAY=:2 ssh -Y firstname.lastname@example.org
-f /usr/bin/gnome-session 2>/dev/null
That let's you use gui tools like yumex and other gui niceties on a headless server.