Delete row ('2759', '20480') from daily_volatility

ticker_id 2759
day 20480
implied_open 0.1492203739440429
implied_high 0.1539827263039592
implied_low 0.1492203739440429
implied_close 0.1523952755173204
historical_open 0.1301709645043779
historical_high 0.1301709645043779
historical_low 0.1301709645043779
historical_close 0.1301709645043779
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