remove testing code, cleanup

Documentation/Examples/cascade_example.cc

Documentation/Examples/em_shower.cc

Documentation/Examples/staticsequence_example.cc

Documentation/Examples/vertical_EAS.cc

Environment/ShowerAxis.cc

Framework/Cascade/Cascade.h

Framework/Cascade/testCascade.cc

Framework/ProcessSequence/DecayProcess.h

Framework/ProcessSequence/InteractionProcess.h

Framework/ProcessSequence/ProcessSequence.h

Framework/ProcessSequence/ProcessTraits.h

Framework/ProcessSequence/SwitchProcessSequence.h

Framework/ProcessSequence/testProcessSequence.cc

Framework/ProcessSequence/testSwitchProcessSequence.cc

Framework/ProcessSequence/testSwitchProcessSequence.h

Framework/Random/RNGManager.cc

Framework/StackInterface/SecondaryView.h

Framework/StackInterface/Stack.h

Framework/StackInterface/StackIteratorInterface.h

Processes/LongitudinalProfile/LongitudinalProfile.cc