Delete row ('40', '20682') from daily_volatility

ticker_id 40
day 20682
implied_open 0.43337406475238
implied_high 0.4444862202588513
implied_low 0.4254368108191862
implied_close 0.4428987694722125
historical_open 0.601643848136088
historical_high 0.601643848136088
historical_low 0.601643848136088
historical_close 0.601643848136088
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