Modify Radial Distance Utils to Work With Both Sub Classes of MagnetSet()

[Edgar-21]

As noted in #182, the only thing the coil filament data is used for in MagnetSetFromGeometry() is so the radial distance utilities work with both subclasses. Removing the coil filament data from MagnetSetFromGeometry() and updating the radial distance utilities so it will work with both subclasses seems to make sense from a separation of concerns point of view.

[connoramoreno]

@Edgar-21 has this been addressed?

[Edgar-21]

No I haven't started working on this yet, it also might not be necessary since if a user has the filament data to generate the surface we fire rays at they could just use MagnetSetFromFilaments() if they need to do radial distance finding. At the time I made this issue I felt that both classes should work with all parts of parastell but maybe that isn't the case?