Delete row ('635', '20704') from daily_volatility

ticker_id 635
day 20704
implied_open 0.7175277555607169
implied_high 0.7715010823064347
implied_low 0.671491682748193
implied_close 0.7334022634271045
historical_open 0.9778696845694728
historical_high 0.9778696845694728
historical_low 0.9778696845694728
historical_close 0.9778696845694728
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