RF: Remove unused functions
RF: Remove unused functions

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