cubicweb #5618947 cubicweb-ctl: remove 'startorder' management [validation pending]

It's useless nowadays

prioritynormal
typeenhancement
done in3.22.1
load0.250
load left0.000
closed by#269317987dc6 [cwctl] remove support for startorder file in /etc/cubicweb.d (closes #5618947)
patch[cwctl] remove support for startorder file in /etc/cubicweb.d (closes #5618947) [applied]