code: def delete_unique_identity(db, uuid):
      
      with db.connect() as session:
          uidentity = find_unique_identity(session, uuid)
  
          if not uidentity:
              raise NotFoundError(entity=uuid)
  
          delete_unique_identity_db(session, uidentity)
docs: Remove a unique identity from the registry.
  
      Function that removes from the registry, the unique identity
      that matches with uuid. Data related to this identity will be
      also removed.
  
      It checks first whether the unique identity is already on the registry.
      When it is found, the unique identity is removed. Otherwise, it will
      raise a 'NotFoundError' exception.
  
      :param db: database manager
      :param uuid: unique identifier assigned to the unique identity set
          for being removed
  
      :raises NotFoundError: raised when the unique identity does not exist
          in the registry.