REF: removed unused variables
REF: removed unused variables

Former-commit-id: d05de9a27619543181811d7f22a45cdb6e577120
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox