INST: updte_bin: does not remove old files anymore
INST: updte_bin: does not remove old files anymore

Former-commit-id: b0dc799766af94977f951a9bb7cccb8521be432d [formerly 647b92b8b2b8f6ff5208193c88c85eb3c85e5727]
Former-commit-id: 2fce917a7d6387c8759bd231bfbf7efa2fc1e701
Former-commit-id: feea049416b40233c631dc2f1b90d307823b3675
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox