Delete row ('2311', '20685') from daily_volatility

ticker_id 2311
day 20685
implied_open 0.7746759838797123
implied_high 0.7810257870262672
implied_low 0.7508642220801309
implied_close 0.776263434666351
historical_open 0.8270618598387911
historical_high 0.8270618598387911
historical_low 0.8270618598387911
historical_close 0.8270618598387911
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