Delete row ('2321', '20409') from daily_volatility

ticker_id 2321
day 20409
implied_open 0.5714822831899515
implied_high 0.5921191434162554
implied_low 0.5651324800433966
implied_close 0.5889442418429779
historical_open 0.4349615155390187
historical_high 0.4349615155390187
historical_low 0.4349615155390187
historical_close 0.4349615155390187
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