Delete row ('2678', '20735') from daily_volatility

ticker_id 2678
day 20735
implied_open 0.6667293303882769
implied_high 1.45251746977446
implied_low 0.6667293303882769
implied_close 1.409656298535214
historical_open 0.2730415353018658
historical_high 0.2730415353018658
historical_low 0.2730415353018658
historical_close 0.2730415353018658
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