Delete row ('1571', '20279') from daily_volatility

ticker_id 1571
day 20279
implied_open 0.2111309546229543
implied_high 0.2127184054095931
implied_low 0.2047811514763993
implied_close 0.2095435038363156
historical_open 0.1650948818104304
historical_high 0.1650948818104304
historical_low 0.1650948818104304
historical_close 0.1650948818104304
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