Delete row ('1481', '20509') from daily_volatility

ticker_id 1481
day 20509
implied_open 1.14772691873982
implied_high 1.150901820313097
implied_low 1.114390452220406
implied_close 1.127090058513516
historical_open 1.101690845927296
historical_high 1.101690845927296
historical_low 1.101690845927296
historical_close 1.101690845927296
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