code: def watchlistDelete(self, trade_id):
          
          method = 'DELETE'
          url = 'watchlist'
  
          if not isinstance(trade_id, (list, tuple)):
              trade_id = (trade_id,)
          trade_id = (str(i) for i in trade_id)
          params = {'tradeId': ','.join(trade_id)}
          self.__request__(method, url, params=params)  # returns nothing
          return True
docs: Remove cards from watchlist.
  
          :params trade_id: Trade id.