Delete row ('1411', '20731') from daily_volatility

ticker_id 1411
day 20731
implied_open 0.6508548225218893
implied_high 0.788963040959461
implied_low 0.6508548225218893
implied_close 0.6921285429744969
historical_open 0.6619669780283606
historical_high 0.6619669780283606
historical_low 0.6619669780283606
historical_close 0.6619669780283606
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