Delete row ('1390', '20619') from daily_volatility

ticker_id 1390
day 20619
implied_open 0.7381646157870208
implied_high 0.7492767712934921
implied_low 0.7080030508408844
implied_close 0.7080030508408844
historical_open 0.6429175685886955
historical_high 0.6429175685886955
historical_low 0.6429175685886955
historical_close 0.6429175685886955
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