Delete row ('2661', '20742') from daily_volatility

ticker_id 2661
day 20742
implied_open 0.523858759590789
implied_high 0.5365583658838989
implied_low 0.4968720962179302
implied_close 0.5349709150972602
historical_open 0.4825850391381813
historical_high 0.4825850391381813
historical_low 0.4825850391381813
historical_close 0.4825850391381813
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