Delete row ('2766', '20690') from daily_volatility

ticker_id 2766
day 20690
implied_open 0.1968438975432056
implied_high 0.1968438975432056
implied_low 0.1777944881035405
implied_close 0.180969389676818
historical_open 0.1952564467565668
historical_high 0.1952564467565668
historical_low 0.1952564467565668
historical_close 0.1952564467565668
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