Delete row ('9', '20111') from daily_volatility

ticker_id 9
day 20111
implied_open 0.284153690808337
implied_high 0.2873285923816146
implied_low 0.2809787892350595
implied_close 0.284153690808337
historical_open 0.2301803640626194
historical_high 0.2301803640626194
historical_low 0.2301803640626194
historical_close 0.2301803640626194
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