def unregister_factory(self, factory):
Empty status elements are ignored.
dataset/ETHPy150Open enthought/pyface/pyface/tasks/i_editor_area_pane.py/IEditorAreaPane.unregister_factory--crossover with--dataset/ETHPy150Open ralphm/wokkel/wokkel/test/test_muc.py/UserPresenceTest.test_fromElementStatusEmpty