Delete row ('2411', '20718') from daily_volatility

ticker_id 2411
day 20718
implied_open 0.2666917321553107
implied_high 0.284153690808337
implied_low 0.265104281368672
implied_close 0.2793913384484208
historical_open 0.2285929132759806
historical_high 0.2285929132759806
historical_low 0.2285929132759806
historical_close 0.2285929132759806
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