Delete row ('602', '20536') from daily_volatility

ticker_id 602
day 20536
implied_open 0.6905410921878581
implied_high 0.7318148126404658
implied_low 0.5079842517244014
implied_close 0.646092470161973
historical_open 0.8238869582655136
historical_high 0.8238869582655136
historical_low 0.8238869582655136
historical_close 0.8238869582655136
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