Delete row ('2604', '20740') from daily_volatility

ticker_id 2604
day 20740
implied_open 0.2285929132759806
implied_high 0.2381176179958132
implied_low 0.2270054624893419
implied_close 0.2365301672091744
historical_open 0.1714446849569855
historical_high 0.1714446849569855
historical_low 0.1714446849569855
historical_close 0.1714446849569855
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