Delete row ('2145', '20171') from daily_volatility

ticker_id 2145
day 20171
implied_open 0.7445144189335758
implied_high 0.9778696845694728
implied_low 0.6143434544291979
implied_close 0.6762540351081093
historical_open 1.090578690420824
historical_high 1.090578690420824
historical_low 1.090578690420824
historical_close 1.090578690420824
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