Remove pregeneration, move example configs to contrib

contrib/example-configs/wm

@@ -0,0 +1,63 @@
+#.fsdefaults
+[ -z "$DISPLAY" ]
+:
+command -v 2bwm
+2bwm
+command -v aewm
+aewm
+command -v awesome
+awesome
+command -v bspwm
+bspwm
+command -v catwm
+catwm
+command -v cwm
+cwm
+command -v dwm
+dwm
+command -v evilwm
+evilwm
+command -v exwm
+exwm
+command -v fluxbox
+fluxbox
+command -v flwm
+flwm
+command -v fvwm
+fvwm
+command -v herbstluftwm
+herbstluftwm
+command -v i3
+i3
+command -v icewm
+icewm
+command -v jbwm
+jbwm
+command -v jwm
+jwm
+command -v lwm
+lwm
+command -v openbox
+openbox
+command -v pawm
+pawm
+command -v ratpoison
+ratpoison
+command -v twm
+twm
+command -v windowmaker
+windowmaker
+command -v wmii
+wmii
+command -v xmonad
+xmonad
+command -v xfwm4
+xfwm4
+command -v metacity
+metacity
+command -v mutter
+mutter
+command -v kwin
+kwin
+command -v tinywm
+tinywm