Delete row ('1876', '20556') from daily_volatility

ticker_id 1876
day 20556
implied_open 0.5143340548709564
implied_high 0.549257972177009
implied_low 0.5143340548709564
implied_close 0.5476705213903703
historical_open 0.5794195371231453
historical_high 0.5794195371231453
historical_low 0.5794195371231453
historical_close 0.5794195371231453
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