Delete row ('6', '20685') from daily_volatility

ticker_id 6
day 20685
implied_open 1.020730855808719
implied_high 1.060417125474688
implied_low 1.020730855808719
implied_close 1.042955166821662
historical_open 1.419181003255046
historical_high 1.419181003255046
historical_low 1.419181003255046
historical_close 1.419181003255046
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