cubicweb-worker #3104067 WorkerTask cleanup [resolved]

remove .committing and .aborted attributes which are not used here
remove on_behalf relation also (unused)

prioritynormal
typeenhancement
done in3.0.0
load0.100
load left0.000
closed by#eb4d9132254e [schema,entities] CWWorkerTask: remove .committing and .aborted attributes, on_behalf relation
patch[schema,entities] CWWorkerTask: remove .committing and .aborted attributes, on_behalf relation [applied]