Delete row ('40', '20279') from daily_volatility

ticker_id 40
day 20279
implied_open 0.2174807577695094
implied_high 0.2333552656358969
implied_low 0.2174807577695094
implied_close 0.2206556593427869
historical_open 0.3190776081143896
historical_high 0.3190776081143896
historical_low 0.3190776081143896
historical_close 0.3190776081143896
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