It looks like some auto-magic configuration gizmo has decided that your window manager is "supposed" to be windowmaker and is inserting the command to start it into your .xinitrc file. Here's what you can do to find out which file is causing the problems:
1) read the man pages on "grep". (yes, I know this is a cop out on my part but there's really no substitute for reading tfm)
2) starting in "/", grep recursively for the phrases: "# Enlightenment inserted Execution string here" and "exec /usr/X11R6/bin/enlightenment".
3) remove or comment out (put a "#" at the beginning of the line) all mentions of those phrases.
4) cross your fingers and reboot
Hopefully this will save you some fingerwork in the future. Anybody more Suse-friendly have any suggestions?