Delete row ('2717', '20559') from daily_volatility

ticker_id 2717
day 20559
implied_open 0.252404675075562
implied_high 0.2666917321553107
implied_low 0.2460548719290069
implied_close 0.2587544782221169
historical_open 0.2317678148492582
historical_high 0.2317678148492582
historical_low 0.2317678148492582
historical_close 0.2317678148492582
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