Delete row ('2717', '20115') from daily_volatility

ticker_id 2717
day 20115
implied_open 0.2603419290087557
implied_high 0.2730415353018658
implied_low 0.2603419290087557
implied_close 0.2682791829419495
historical_open 0.1920815451832893
historical_high 0.1920815451832893
historical_low 0.1920815451832893
historical_close 0.1920815451832893
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