COMP: Removed member var to track debugging status - using ITK object's debug flag instead.
COMP: Removed member var to track debugging status - using ITK object's debug flag instead.

cdeepakroy/TubeTK,sumedhasingla/TubeTK,sumedhasingla/TubeTK,aylward/ITKTubeTK,KitwareMedical/ITKTubeTK,LucasGandel/TubeTK,aylward/ITKTubeTK,cdeepakroy/TubeTK,thewtex/TubeTK,thewtex/TubeTK,matthieuheitz/TubeTK,KitwareMedical/TubeTK,matthieuheitz/TubeTK,KitwareMedical/ITKTubeTK,KitwareMedical/TubeTK,LucasGandel/TubeTK,thewtex/TubeTK,aylward/ITKTubeTK,aylward/ITKTubeTK,LucasGandel/TubeTK,KitwareMedical/TubeTK,cdeepakroy/TubeTK,sumedhasingla/TubeTK,KitwareMedical/TubeTK,KitwareMedical/ITKTubeTK,matthieuheitz/TubeTK,matthieuheitz/TubeTK,thewtex/TubeTK,cdeepakroy/TubeTK,sumedhasingla/TubeTK,KitwareMedical/ITKTubeTK,LucasGandel/TubeTK