Delete row ('80', '20696') from daily_volatility

ticker_id 80
day 20696
implied_open 0.1936689959699281
implied_high 0.2031937006897606
implied_low 0.1762070373169017
implied_close 0.1904940943966505
historical_open 0.1968438975432056
historical_high 0.1968438975432056
historical_low 0.1968438975432056
historical_close 0.1968438975432056
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