Delete row ('2764', '20397') from daily_volatility

ticker_id 2764
day 20397
implied_open 0.1841442912500955
implied_high 0.2111309546229543
implied_low 0.1777944881035405
implied_close 0.180969389676818
historical_open 0.1365207676509329
historical_high 0.1365207676509329
historical_low 0.1365207676509329
historical_close 0.1365207676509329
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