Delete row ('1670', '20188') from daily_volatility

ticker_id 1670
day 20188
implied_open 0.9016720468108126
implied_high 1.063592027047966
implied_low 0.9016720468108126
implied_close 1.000093995582415
historical_open 1.266785727737726
historical_high 1.266785727737726
historical_low 1.266785727737726
historical_close 1.266785727737726
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