Delete multiple parcels in bulk

        Deletes up to 200 parcels in a single request. 
        Returns detailed success/failure information for each parcel.
        
        Important notes:
        - ExchangeReturn parcels cannot be deleted
        - If a parcel has a ReturnParcel, it will also be deleted
        - If deleting a ReturnParcel, the OriginalParcel's IsExchanged flag will be reset

        Response Status Codes:
        - 200 OK: All parcels deleted successfully
        - 207 Multi-Status: Partial success (some parcels deleted, some failed)
        - 400 Bad Request: All parcels failed validation or deletion