DOC: sct_check_dependences: removed check for dipy
DOC: sct_check_dependences: removed check for dipy

Former-commit-id: eb4970c448f489bce9b7de2cc049dafd9a8cff1d
Former-commit-id: ebc9f94308e57db621d76b037cfb17764f3d3fbc
3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox