Delete row ('1553', '20728') from daily_volatility

ticker_id 1553
day 20728
implied_open 0.7730885330930735
implied_high 0.814362253545681
implied_low 0.7667387299465185
implied_close 0.7667387299465185
historical_open 0.8635732279314824
historical_high 0.8635732279314824
historical_low 0.8635732279314824
historical_close 0.8635732279314824
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