Delete row ('2770', '20726') from daily_volatility

ticker_id 2770
day 20726
implied_open 0.2968532971014471
implied_high 0.3000281986747246
implied_low 0.2905034939548921
implied_close 0.2984407478880858
historical_open 0.2619293797953945
historical_high 0.2619293797953945
historical_low 0.2619293797953945
historical_close 0.2619293797953945
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