Delete row ('1670', '20468') from daily_volatility

ticker_id 1670
day 20468
implied_open 0.6968908953344132
implied_high 0.6968908953344132
implied_low 0.6603795272417218
implied_close 0.6762540351081093
historical_open 0.671491682748193
historical_high 0.671491682748193
historical_low 0.671491682748193
historical_close 0.671491682748193
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