Revert "ENH: Use updated MNI template"
Revert "ENH: Use updated MNI template"

This reverts commit 80bfe47bab731f80d297476c3bec8ef39949b449.

oesteban/preprocessing-workflow,poldracklab/preprocessing-workflow,poldracklab/fmriprep,oesteban/fmriprep,poldracklab/fmriprep,poldracklab/preprocessing-workflow,oesteban/fmriprep,oesteban/fmriprep,oesteban/preprocessing-workflow,poldracklab/fmriprep