Removed (unused ?) pubsub mechanism for status objects

.../Trajectories/MMTK/output_protein_in_periodic_universe.nc

MDANSE/App/GUI/ComboWidgets/ProgressBar.py

MDANSE/App/GUI/DataController.py

MDANSE/App/GUI/DataTreePanel.py

MDANSE/App/GUI/Framework/Plugins/AnimationPlugin.py

MDANSE/App/GUI/Framework/Plugins/DataPlugin.py

MDANSE/App/GUI/Framework/Plugins/IPlugin.py

MDANSE/App/GUI/Framework/Plugins/JobPlugin.py

MDANSE/App/GUI/Framework/Plugins/MolecularViewerPlugin.py

MDANSE/App/GUI/Framework/Widgets/AtomSelectionWidget.py

MDANSE/App/GUI/Framework/Widgets/FramesWidget.py

MDANSE/App/GUI/Framework/Widgets/IWidget.py

...E/App/GUI/Framework/Widgets/InstrumentResolutionWidget.py

MDANSE/App/GUI/Framework/Widgets/InterpolationOrderWidget.py

MDANSE/App/GUI/Framework/Widgets/MMTKTrajectoryWidget.py

MDANSE/App/GUI/Framework/Widgets/McStasInstrumentWidget.py

MDANSE/App/GUI/Framework/Widgets/McStasParametersWidget.py

MDANSE/App/GUI/Framework/Widgets/NetCDFInputFileWidget.py

MDANSE/App/GUI/Framework/Widgets/OutputFilesWidget.py

MDANSE/App/GUI/Framework/Widgets/TrajectoryVariableWidget.py