Delete row ('2770', '20739') from daily_volatility

ticker_id 2770
day 20739
implied_open 0.2762164368751432
implied_high 0.2873285923816146
implied_low 0.2682791829419495
implied_close 0.2793913384484208
historical_open 0.2508172242889232
historical_high 0.2508172242889232
historical_low 0.2508172242889232
historical_close 0.2508172242889232
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