Delete row ('2764', '20479') from daily_volatility

ticker_id 2764
day 20479
implied_open 0.1539827263039592
implied_high 0.1666823325970692
implied_low 0.1523952755173204
implied_close 0.1635074310237917
historical_open 0.1476329231574041
historical_high 0.1476329231574041
historical_low 0.1476329231574041
historical_close 0.1476329231574041
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