Delete row ('1670', '20609') from daily_volatility

ticker_id 1670
day 20609
implied_open 0.7873755901728222
implied_high 0.8842100881577862
implied_low 0.7794383362396284
implied_close 0.8572234247849274
historical_open 0.7127654032008007
historical_high 0.7127654032008007
historical_low 0.7127654032008007
historical_close 0.7127654032008007
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