Delete row ('1177', '20670') from daily_volatility

ticker_id 1177
day 20670
implied_open 0.7381646157870208
implied_high 0.7381646157870208
implied_low 0.639742667015418
implied_close 0.6778414858947481
historical_open 0.646092470161973
historical_high 0.646092470161973
historical_low 0.646092470161973
historical_close 0.646092470161973
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