Delete row ('2766', '20570') from daily_volatility

ticker_id 2766
day 20570
implied_open 0.2270054624893419
implied_high 0.2397050687824519
implied_low 0.2238305609160644
implied_close 0.2254180117027031
historical_open 0.2460548719290069
historical_high 0.2460548719290069
historical_low 0.2460548719290069
historical_close 0.2460548719290069
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