Delete row ('1867', '20699') from daily_volatility

ticker_id 1867
day 20699
implied_open 0.6841912890413031
implied_high 0.7683261807331572
implied_low 0.6064062004960041
implied_close 0.6540297240951668
historical_open 0.6826038382546643
historical_high 0.6826038382546643
historical_low 0.6826038382546643
historical_close 0.6826038382546643
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