Delete row ('40', '20144') from daily_volatility

ticker_id 40
day 20144
implied_open 0.3270148620475834
implied_high 0.3317772144074996
implied_low 0.3222525096876671
implied_close 0.3286023128342221
historical_open 0.2111309546229543
historical_high 0.2111309546229543
historical_low 0.2111309546229543
historical_close 0.2111309546229543
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