Delete row ('2631', '20684') from daily_volatility

ticker_id 2631
day 20684
implied_open 0.8492861708517336
implied_high 0.9207214562504776
implied_low 0.7540391236534084
implied_close 0.8508736216383724
historical_open 1.120740255366961
historical_high 1.120740255366961
historical_low 1.120740255366961
historical_close 1.120740255366961
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