Delete row ('9', '20578') from daily_volatility

ticker_id 9
day 20578
implied_open 0.2301803640626194
implied_high 0.2397050687824519
implied_low 0.2270054624893419
implied_close 0.2333552656358969
historical_open 0.2666917321553107
historical_high 0.2666917321553107
historical_low 0.2666917321553107
historical_close 0.2666917321553107
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