Delete row ('635', '20209') from daily_volatility

ticker_id 635
day 20209
implied_open 0.9191340054638388
implied_high 1.028668109741913
implied_low 0.7984877456792935
implied_close 0.9619951767030852
historical_open 1.206462597845453
historical_high 1.206462597845453
historical_low 1.206462597845453
historical_close 1.206462597845453
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