Remove Voronoi as this is now done in the class
Remove Voronoi as this is now done in the class


Former-commit-id: 0582467245d4e5ceb881b23f859f8d441e042d4b
Former-commit-id: 699e195e78a41b44407ac498b80165afcedcb8f8
amdouglas/OpenPNM,TomTranter/OpenPNM,PMEAL/OpenPNM,stadelmanma/OpenPNM,amdouglas/OpenPNM