Delete row ('766', '20733') from daily_volatility

ticker_id 766
day 20733
implied_open 1.242973965938145
implied_high 3.735271700960989
implied_low 1.242973965938145
implied_close 1.263610826164449
historical_open 1.009618700302248
historical_high 1.009618700302248
historical_low 1.009618700302248
historical_close 1.009618700302248
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