Delete row ('560', '20690') from daily_volatility

ticker_id 560
day 20690
implied_open 0.8762728342245925
implied_high 0.9096093007440063
implied_low 0.7492767712934921
implied_close 0.8318242121987074
historical_open 0.9985065447957765
historical_high 0.9985065447957765
historical_low 0.9985065447957765
historical_close 0.9985065447957765
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