Destroy an Item

[ALHelton]

This endpoint should:

• destroy the corresponding record (if found) and any associated data
• destroy any invoice if this was the only item on an invoice
• NOT return any JSON body at all, and should return a 204 HTTP status code
• NOT utilize a Serializer (Rails will handle sending a 204 on its own if you just .destroy the object)

[ALHelton]

Need to delete invoices associated with the item where the item is the only one on the invoice (invoice_items?) Need to do sad path testing