Delete row ('2760', '20700') from daily_volatility

ticker_id 2760
day 20700
implied_open 0.1777944881035405
implied_high 0.1777944881035405
implied_low 0.168269783383708
implied_close 0.1714446849569855
historical_open 0.161919980237153
historical_high 0.161919980237153
historical_low 0.161919980237153
historical_close 0.161919980237153
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