Delete row ('331', '20742') from daily_volatility

ticker_id 331
day 20742
implied_open 0.8635732279314824
implied_high 0.9016720468108126
implied_low 0.8381740153452624
implied_close 0.898497145237535
historical_open 0.814362253545681
historical_high 0.814362253545681
historical_low 0.814362253545681
historical_close 0.814362253545681
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