Delete row ('211', '20692') from daily_volatility

ticker_id 211
day 20692
implied_open 0.6746665843214706
implied_high 0.730227361853827
implied_low 0.6349803146555018
implied_close 0.646092470161973
historical_open 0.9588202751298077
historical_high 0.9588202751298077
historical_low 0.9588202751298077
historical_close 0.9588202751298077
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