DOC: removed fig because too large
DOC: removed fig because too large

Former-commit-id: f9c684b909d0a5d4bbcbc32bd98b4bc97a60f479 [formerly 54a5f8e98c10a360552ff3821be2b66bd2bc0743]
Former-commit-id: f644860ef5446a01b126ddfcbfa4ce86e5072ef2
Former-commit-id: bb8d35e2def07d2d77e5589d38dfc61569d10ba9
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox