Delete row ('480', '20733') from daily_volatility

ticker_id 480
day 20733
implied_open 0.3270148620475834
implied_high 0.3270148620475834
implied_low 0.2206556593427869
implied_close 0.2968532971014471
historical_open 0.1777944881035405
historical_high 0.1777944881035405
historical_low 0.1777944881035405
historical_close 0.1777944881035405
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