Delete row ('1685', '20591') from daily_volatility

ticker_id 1685
day 20591
implied_open 0.8778602850112313
implied_high 0.9064343991707288
implied_low 0.873097932651315
implied_close 0.8762728342245925
historical_open 0.8349991137719849
historical_high 0.8349991137719849
historical_low 0.8349991137719849
historical_close 0.8349991137719849
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