Delete row ('2766', '20671') from daily_volatility

ticker_id 2766
day 20671
implied_open 0.2158933069828706
implied_high 0.2158933069828706
implied_low 0.1952564467565668
implied_close 0.2000187991164831
historical_open 0.2127184054095931
historical_high 0.2127184054095931
historical_low 0.2127184054095931
historical_close 0.2127184054095931
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