Delete row ('2661', '20488') from daily_volatility

ticker_id 2661
day 20488
implied_open 0.5857693402697004
implied_high 0.633392863868863
implied_low 0.5667199308300354
implied_close 0.6095811020692816
historical_open 0.6587920764550831
historical_high 0.6587920764550831
historical_low 0.6587920764550831
historical_close 0.6587920764550831
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