Delete row ('6', '20738') from daily_volatility

ticker_id 6
day 20738
implied_open 0.988981840075944
implied_high 1.023905757381997
implied_low 0.9778696845694728
implied_close 0.9873943892893052
historical_open 0.8413489169185399
historical_high 0.8413489169185399
historical_low 0.8413489169185399
historical_close 0.8413489169185399
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