Delete row ('2519', '20350') from daily_volatility

ticker_id 2519
day 20350
implied_open 0.5603701276834803
implied_high 0.5714822831899515
implied_low 0.5476705213903703
implied_close 0.5508454229636478
historical_open 0.4428987694722125
historical_high 0.4428987694722125
historical_low 0.4428987694722125
historical_close 0.4428987694722125
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