Function obj_doc_delete 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn obj_doc_delete(
    txn: *mut obj_write_txn_t,
    collection: *const c_char,
    id: u64,
) -> obj_error_t

Delete the document at id in collection. Returns OBJ_ERR_NOT_FOUND if the id is absent.

Safety

As obj_doc_update.