INST: removed dipy from Conda requirements
INST: removed dipy from Conda requirements

Former-commit-id: bb28b325938d677412c9745505940d176c7b6f36
Former-commit-id: 5963b1dde6cb1391b6aa2ab670db2e2a83f7a498
3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox