BUG: remove stale debug print (#1574) (#1576)
BUG: remove stale debug print (#1574) (#1576)

Travis passes on Linux but still hangs on MacOSX. It is safe to merge.

Former-commit-id: 6cdc88c27cdf2e293e480ed892616b94ddd8874f
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox