code: public Response remove(String id, String rev) {
          assertNotEmpty(id, "id");
          assertNotEmpty(id, "rev");
          return db.remove(ensureDesignPrefix(id), rev);
  
      }
docs: Removes a design document using the id and rev from the database.
  
  @param id  the document id (optionally prefixed with "_design/")
  @param rev the document revision
  @return {@link DesignDocument}