Can I remove the .xsession file and similar files from my machine?

Can I remove the .xsession file and similar files from my machine?

Are the following files needed on my machine? (I want to remove them.)
    .xsession
    .xsession-errors
    .xsession-errors.old
    .Xathority.XXXXXX
I believe most if not all of them originated during my attempt at getting remote desktop working as I entered the following into the command line:
    cd /home/youruser
    echo “gnome-session –session=ubuntu-2d” > .xsession
    sudo /etc/init.d/xrdp restart