Delete row ('2770', '20686') from daily_volatility

ticker_id 2770
day 20686
implied_open 0.277803887661782
implied_high 0.277803887661782
implied_low 0.2698666337285883
implied_close 0.2730415353018658
historical_open 0.3000281986747246
historical_high 0.3000281986747246
historical_low 0.3000281986747246
historical_close 0.3000281986747246
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