Removing unused RPM

Is there any list of unused RPM packages that is not necessary installed and needed by CPANEL?
Is it safe for me to remove these packages :
xorg-x11-Mesa-libGL-6.8.2-1.EL.13.16
xorg-x11-xauth-6.8.2-1.EL.13.16
xorg-x11-devel-6.8.2-1.EL.13.16
xorg-x11-libs-6.8.2-1.EL.13.16
xorg-x11-Mesa-libGL-6.8.2-1.EL.13.16
xorg-x11-font-utils-6.8.2-1.EL.13.16
xorg-x11-libs-6.8.2-1.EL.13.16
xorg-x11-xfs-6.8.2-1.EL.13.16
xorg-x11-devel-6.8.2-1.EL.13.16
gnome-mime-data-2.4.1-5
gnome-keyring-0.4.0-1
libgnome-2.8.0-2
gnome-python2-bonobo-2.6.0-3
libgnomecanvas-2.8.0-1
gnome-python2-2.6.0-3
gnome-python2-canvas-2.6.0-3
gnome-vfs2-2.8.2-8.2
libgnomeui-2.8.0-1
gnome-python2-gtkhtml2-2.6.0-3

 

 

 

 

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