BUG: Remove unused code not run

The code to remove java binary files has not been running. The correct
dependencies have been added to the SWIG process so this has not been
needed for a while now.

Change-Id: I922348f394abda0864b575c351a5834f697a0580
Merge topic 'SIMPLEITK-554_SimpleITKBasicFiltersSimpleITKBasicFilters' into next

97dbc6d0 BUG: Remove unused code not run