code: def delete(self, table, keyset):
          
          delete = Mutation.Delete(table=table, key_set=keyset._to_pb())
          self._mutations.append(Mutation(delete=delete))
docs: Delete one or more table rows.
  
          :type table: str
          :param table: Name of the table to be modified.
  
          :type keyset: :class:`~google.cloud.spanner_v1.keyset.Keyset`
          :param keyset: Keys/ranges identifying rows to delete.