Delete row ('2631', '20699') from daily_volatility

ticker_id 2631
day 20699
implied_open 0.873097932651315
implied_high 0.873097932651315
implied_low 0.769913631519796
implied_close 0.8461112692784561
historical_open 0.9381834149035039
historical_high 0.9381834149035039
historical_low 0.9381834149035039
historical_close 0.9381834149035039
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