[Backend] Delete All Corresponding Relations when Deleting User #110
Description
Description
Currently, when we try to delete a user it throws an error because we have added several new models that have relations with the User model. The delete route only deletes the user's corresponding VolunteerDetails document, but we also want it to delete every other document it is connected to (such as TimeSlots and VolunteerSessions).
Testing
Make sure that everything related to the User model is deleted!