Delete row ('2720', '20726') from daily_volatility

ticker_id 2720
day 20726
implied_open 1.00644379872897
implied_high 1.049304969968217
implied_low 0.9651700782763627
implied_close 1.022318306595358
historical_open 0.9302461609703101
historical_high 0.9302461609703101
historical_low 0.9302461609703101
historical_close 0.9302461609703101
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