Delete row ('2766', '20042') from daily_volatility

ticker_id 2766
day 20042
implied_open 0.1841442912500955
implied_high 0.1920815451832893
implied_low 0.1777944881035405
implied_close 0.1889066436100118
historical_open 0.1777944881035405
historical_high 0.1777944881035405
historical_low 0.1777944881035405
historical_close 0.1777944881035405
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