Delete row ('862', '20726') from daily_volatility

ticker_id 862
day 20726
implied_open 0.9524704719832526
implied_high 1.01914340502208
implied_low 0.9000845960241738
implied_close 0.9461206688366977
historical_open 0.9334210625435876
historical_high 0.9334210625435876
historical_low 0.9334210625435876
historical_close 0.9334210625435876
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