Delete row ('1307', '20728') from daily_volatility

ticker_id 1307
day 20728
implied_open 0.7127654032008007
implied_high 0.7127654032008007
implied_low 0.6699042319615544
implied_close 0.6794289366813868
historical_open 0.8000751964659323
historical_high 0.8000751964659323
historical_low 0.8000751964659323
historical_close 0.8000751964659323
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