Delete row ('1585', '20487') from daily_volatility

ticker_id 1585
day 20487
implied_open 0.2397050687824519
implied_high 0.2555795766488395
implied_low 0.2317678148492582
implied_close 0.2397050687824519
historical_open 0.1762070373169017
historical_high 0.1762070373169017
historical_low 0.1762070373169017
historical_close 0.1762070373169017
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