Delete row ('2687', '20444') from daily_volatility

ticker_id 2687
day 20444
implied_open 0.6048187497093654
implied_high 0.6318054130822243
implied_low 0.5968814957761717
implied_close 0.6000563973494492
historical_open 0.7191152063473557
historical_high 0.7191152063473557
historical_low 0.7191152063473557
historical_close 0.7191152063473557
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