I wanted to remove unity-settings-daemon because thats the only unity-package I have it besides unity-greeter. I run a gnome-shell, hence do not need unity.
However, when I try to remove unity-settings-daemon, dpkg would also like to remove ubuntu-session. Is it safe to do it, or would I break my display manager or something else?

```
dpkg -L ubuntu-session 

/usr
/usr/share
/usr/share/gnome-session
/usr/share/gnome-session/sessions
/usr/share/gnome-session/sessions/ubuntu.session
/usr/share/doc
/usr/share/doc/ubuntu-session
/usr/share/doc/ubuntu-session/copyright
/usr/share/xsessions
/usr/share/xsessions/ubuntu.desktop
/usr/share/lightdm
/usr/share/lightdm/lightdm.conf.d
/usr/share/lightdm/lightdm.conf.d/50-ubuntu.conf
/usr/share/doc/ubuntu-session/README
/usr/share/doc/ubuntu-session/changelog.Debian.gz
/usr/share/doc/ubuntu-session/AUTHORS
/usr/share/doc/ubuntu-session/NEWS.gz

```

Also, is there a way to show which files would be removed when I do a sudo apt-get remove --dry-run PackageName ? 
At the moment, I see which packages would be removed, but not which files would be removed.