Delete row ('40', '20371') from daily_volatility

ticker_id 40
day 20371
implied_open 0.3174901573277509
implied_high 0.3524140746338035
implied_low 0.3047905510346408
implied_close 0.3492391730605259
historical_open 0.2905034939548921
historical_high 0.2905034939548921
historical_low 0.2905034939548921
historical_close 0.2905034939548921
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