BUG: Update ImageViewer to revert an ineffective fix to a cmake warning
BUG: Update ImageViewer to revert an ineffective fix to a cmake warning

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