Delete row ('2761', '20497') from daily_volatility

ticker_id 2761
day 20497
implied_open 0.2984407478880858
implied_high 0.3016156494613633
implied_low 0.2762164368751432
implied_close 0.2857411415949758
historical_open 0.2460548719290069
historical_high 0.2460548719290069
historical_low 0.2460548719290069
historical_close 0.2460548719290069
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