code: def remove(self, statement_text):
          
          Statement = self.get_model('statement')
          session = self.Session()
  
          query = session.query(Statement).filter_by(text=statement_text)
          record = query.first()
  
          session.delete(record)
  
          self._session_finish(session)
docs: Removes the statement that matches the input text.
          Removes any responses from statements where the response text matches
          the input text.