Delete row ('40', '20060') from daily_volatility

ticker_id 40
day 20060
implied_open 0.2873285923816146
implied_high 0.3016156494613633
implied_low 0.2873285923816146
implied_close 0.2936783955281695
historical_open 0.2333552656358969
historical_high 0.2333552656358969
historical_low 0.2333552656358969
historical_close 0.2333552656358969
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