Revert "Issue #212: using Python 3 for bundling the wheel"
Revert "Issue #212: using Python 3 for bundling the wheel"

This reverts commit 319c7162709d252ca33ea560e0566f1aac520b96.

NifTK/NiftyNet,NifTK/NiftyNet,NifTK/NiftyNet,NifTK/NiftyNet