Delete row ('1571', '20265') from daily_volatility

ticker_id 1571
day 20265
implied_open 0.1650948818104304
implied_high 0.174619586530263
implied_low 0.1650948818104304
implied_close 0.168269783383708
historical_open 0.1555701770905979
historical_high 0.1555701770905979
historical_low 0.1555701770905979
historical_close 0.1555701770905979
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