Remove various obsolete ISF job property modules + clean up legacy config references in comments

This merge request drops a number of obsolete legacy job property modules:

Simulation/ISF/ISF_Config/python/ISF_jobProperties.py
Simulation/ISF/ISF_FastCaloSim/ISF_FastCaloSimParametrization/python/ISF_NativeFastCaloSimJobProperties.py
Simulation/ISF/ISF_FastCaloSim/ISF_FastCaloSimServices/python/ISF_FastCaloSimJobProperties.py
Simulation/ISF/ISF_Fatras/ISF_FatrasServices/python/FatrasPhysicsList.py
Simulation/ISF/ISF_Fatras/ISF_FatrasServices/python/FatrasTuning.py
Simulation/ISF/ISF_Fatras/ISF_FatrasServices/python/FatrasValidation.py
Simulation/ISF/ISF_Fatras/ISF_FatrasServices/python/ISF_FatrasJobProperties.py

Plus clears up a few more references to legacy configuration in comments.