[test] Drop call to CubicWebConfiguration.load_cwctl_plugins in unittest_cwctl.py
This is no longer need now that we call load_available_configurations() in the
"list" command (see 5e7282bdf140).
.. _appobject_module:
:mod:`cubicweb.appobject`
=========================
.. automodule:: cubicweb.appobject
.. autoclass:: AppObject
:show-inheritance:
:members: