Delete row ('40', '20139') from daily_volatility

ticker_id 40
day 20139
implied_open 0.3000281986747246
implied_high 0.3047905510346408
implied_low 0.2984407478880858
implied_close 0.3032031002480021
historical_open 0.2143058561962319
historical_high 0.2143058561962319
historical_low 0.2143058561962319
historical_close 0.2143058561962319
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