Removes Street Race Props (mission-specific map elements) from all Street Races and L1M7.

It's October 31st in Springfield, and Bart is ready for the best Halloween yet! Unfortunately, things don't go as he expects, and some bizarre events ensue. Play as Bart and experience the whole night's events through 7 spooky missions! There's also some extra content (collectibles/costumes).

Fixes some slight errors that only affect Debug Checks users in L1M2, L1M7, L6M5 and L6M7.