TEST: test_register_to_template: remove print
TEST: test_register_to_template: remove print

Former-commit-id: b430ef1f95556cf1d4fdddb14d8139931acc4236
Former-commit-id: 190616766875641b154ae5db2e1cdb111d44da09
3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox