Consider this the reverse of Bug 66225 ;-)

Now that wmaker is no longer shipped or supported, all the logic in xinitrc
dealing with it can be pulled:

[kaboom@skuld kaboom]$ more /etc/X11/xinit/Xclients 
<snip>
PREFERRED=
if [ -f /etc/sysconfig/desktop ]; then
    . /etc/sysconfig/desktop
    if [ "$DESKTOP" = "GNOME" ]; then
        PREFERRED=gnome-session
    elif [ "$DESKTOP" = "KDE" ]; then
        PREFERRED=startkde
    elif [ "$DESKTOP" = "WINDOWMAKER" ]; then
        PREFERRED=wmaker

(noticed this hitting some weirdness upgrading an old frankenstein system -- not
seeing that it would really cause problems for normal systems)