Delete row ('602', '20537') from daily_volatility

ticker_id 602
day 20537
implied_open 0.7222901079206332
implied_high 0.7397520665736596
implied_low 0.6127560036425592
implied_close 0.7175277555607169
historical_open 0.8254744090521523
historical_high 0.8254744090521523
historical_low 0.8254744090521523
historical_close 0.8254744090521523
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