Delete row ('2766', '20693') from daily_volatility

ticker_id 2766
day 20693
implied_open 0.1793819388901792
implied_high 0.1793819388901792
implied_low 0.168269783383708
implied_close 0.1762070373169017
historical_open 0.1920815451832893
historical_high 0.1920815451832893
historical_low 0.1920815451832893
historical_close 0.1920815451832893
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