Delete row ('2766', '20090') from daily_volatility

ticker_id 2766
day 20090
implied_open 0.2000187991164831
implied_high 0.2206556593427869
implied_low 0.2000187991164831
implied_close 0.2095435038363156
historical_open 0.1889066436100118
historical_high 0.1889066436100118
historical_low 0.1889066436100118
historical_close 0.1889066436100118
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