Delete row ('1571', '20370') from daily_volatility

ticker_id 1571
day 20370
implied_open 0.2127184054095931
implied_high 0.2206556593427869
implied_low 0.2127184054095931
implied_close 0.2174807577695094
historical_open 0.1381082184375716
historical_high 0.1381082184375716
historical_low 0.1381082184375716
historical_close 0.1381082184375716
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