RF: Remove reference to image list __array__
RF: Remove reference to image list __array__

Still a stray reference in a docstring

arokem/nipy,bthirion/nipy,alexis-roche/nipy,alexis-roche/nipy,bthirion/nipy,nipy/nipy-labs,alexis-roche/nireg,alexis-roche/nipy,arokem/nipy,arokem/nipy,alexis-roche/nireg,alexis-roche/niseg,nipy/nipy-labs,bthirion/nipy,alexis-roche/niseg,bthirion/nipy,arokem/nipy,alexis-roche/register,alexis-roche/register,alexis-roche/nipy,nipy/nireg,nipy/nireg,alexis-roche/register