Delete row ('2762', '20621') from daily_volatility

ticker_id 2762
day 20621
implied_open 0.1460454723707654
implied_high 0.1492203739440429
implied_low 0.1381082184375716
implied_close 0.1492203739440429
historical_open 0.1635074310237917
historical_high 0.1635074310237917
historical_low 0.1635074310237917
historical_close 0.1635074310237917
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