Delete row ('2770', '20748') from daily_volatility

ticker_id 2770
day 20748
implied_open 0.2936783955281695
implied_high 0.3063780018212796
implied_low 0.2889160431682533
implied_close 0.3063780018212796
historical_open 0.2492297735022844
historical_high 0.2492297735022844
historical_low 0.2492297735022844
historical_close 0.2492297735022844
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