Delete row ('2631', '20486') from daily_volatility

ticker_id 2631
day 20486
implied_open 1.066766928621243
implied_high 1.066766928621243
implied_low 0.8556359739982887
implied_close 0.8556359739982887
historical_open 1.379494733589078
historical_high 1.379494733589078
historical_low 1.379494733589078
historical_close 1.379494733589078
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