Delete row ('1585', '20160') from daily_volatility

ticker_id 1585
day 20160
implied_open 0.2095435038363156
implied_high 0.2508172242889232
implied_low 0.2095435038363156
implied_close 0.2190682085561481
historical_open 0.2793913384484208
historical_high 0.2793913384484208
historical_low 0.2793913384484208
historical_close 0.2793913384484208
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