Delete row ('2539', '20306') from daily_volatility

ticker_id 2539
day 20306
implied_open 0.2555795766488395
implied_high 0.2603419290087557
implied_low 0.2492297735022844
implied_close 0.2508172242889232
historical_open 0.361938779353636
historical_high 0.361938779353636
historical_low 0.361938779353636
historical_close 0.361938779353636
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