Delete row ('2770', '20537') from daily_volatility

ticker_id 2770
day 20537
implied_open 0.3127278049678346
implied_high 0.3127278049678346
implied_low 0.2936783955281695
implied_close 0.2968532971014471
historical_open 0.3111403541811958
historical_high 0.3111403541811958
historical_low 0.3111403541811958
historical_close 0.3111403541811958
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