Delete row ('9', '20090') from daily_volatility

ticker_id 9
day 20090
implied_open 0.2365301672091744
implied_high 0.2587544782221169
implied_low 0.2365301672091744
implied_close 0.2492297735022844
historical_open 0.174619586530263
historical_high 0.174619586530263
historical_low 0.174619586530263
historical_close 0.174619586530263
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