Delete row ('473', '20733') from daily_volatility

ticker_id 473
day 20733
implied_open 1.38901943830891
implied_high 1.38901943830891
implied_low 1.323933956056721
implied_close 1.323933956056721
historical_open 0.87944773579787
historical_high 0.87944773579787
historical_low 0.87944773579787
historical_close 0.87944773579787
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