Delete row ('9', '20146') from daily_volatility

ticker_id 9
day 20146
implied_open 0.2428799703557294
implied_high 0.2603419290087557
implied_low 0.2317678148492582
implied_close 0.2587544782221169
historical_open 0.2968532971014471
historical_high 0.2968532971014471
historical_low 0.2968532971014471
historical_close 0.2968532971014471
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