Delete row ('2687', '20399') from daily_volatility

ticker_id 2687
day 20399
implied_open 0.730227361853827
implied_high 0.736577165000382
implied_low 0.7016532476943295
implied_close 0.704828149267607
historical_open 0.8191246059055973
historical_high 0.8191246059055973
historical_low 0.8191246059055973
historical_close 0.8191246059055973
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