don't give directional mappers custom names

[warriorstar-orion]

What Does This PR Do

This PR removes the custom names for directional mapping helpers.

Why It's Good For The Game

This isn't really necessary since the type name now specifies the direction, and so we don't need to rename wallbumps after the fact.

Testing

Checked in-game, and in map editor, for any weird naming problems, saw none.

Changelog

:cl: fix: ATMs are now named correctly. /:cl: