Delete row ('80', '20726') from daily_volatility

ticker_id 80
day 20726
implied_open 0.2555795766488395
implied_high 0.2968532971014471
implied_low 0.2428799703557294
implied_close 0.277803887661782
historical_open 0.2127184054095931
historical_high 0.2127184054095931
historical_low 0.2127184054095931
historical_close 0.2127184054095931
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