Delete row ('2661', '20189') from daily_volatility

ticker_id 2661
day 20189
implied_open 0.9143716531039225
implied_high 0.9318336117569489
implied_low 0.8635732279314824
implied_close 0.8699230310780375
historical_open 0.9985065447957765
historical_high 0.9985065447957765
historical_low 0.9985065447957765
historical_close 0.9985065447957765
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