Delete row ('6', '20476') from daily_volatility

ticker_id 6
day 20476
implied_open 0.9953316432224991
implied_high 1.025493208168635
implied_low 0.9746947829961953
implied_close 0.9905692908625827
historical_open 1.00644379872897
historical_high 1.00644379872897
historical_low 1.00644379872897
historical_close 1.00644379872897
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