RF: Remove deprecated interfaces module.
RF: Remove deprecated interfaces module.

villalonreina/dipy,StongeEtienne/dipy,StongeEtienne/dipy,FrancoisRheaultUS/dipy,villalonreina/dipy,matthieudumont/dipy,nilgoyyou/dipy,matthieudumont/dipy,FrancoisRheaultUS/dipy,nilgoyyou/dipy