Delete row ('2761', '19970') from daily_volatility

ticker_id 2761
day 19970
implied_open 0.2603419290087557
implied_high 0.2746289860885045
implied_low 0.252404675075562
implied_close 0.2619293797953945
historical_open 0.3825756395799398
historical_high 0.3825756395799398
historical_low 0.3825756395799398
historical_close 0.3825756395799398
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