Delete row ('2519', '20347') from daily_volatility

ticker_id 2519
day 20347
implied_open 0.5698948324033128
implied_high 0.5714822831899515
implied_low 0.5556077753235641
implied_close 0.5603701276834803
historical_open 0.43337406475238
historical_high 0.43337406475238
historical_low 0.43337406475238
historical_close 0.43337406475238
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