Delete row ('1961', '20649') from daily_volatility

ticker_id 1961
day 20649
implied_open 0.2619293797953945
implied_high 0.2698666337285883
implied_low 0.2539921258622007
implied_close 0.265104281368672
historical_open 0.2365301672091744
historical_high 0.2365301672091744
historical_low 0.2365301672091744
historical_close 0.2365301672091744
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