Delete row ('635', '20266') from daily_volatility

ticker_id 635
day 20266
implied_open 0.6556171748818056
implied_high 0.6746665843214706
implied_low 0.6175183560024754
implied_close 0.6476799209486118
historical_open 0.8683355802913987
historical_high 0.8683355802913987
historical_low 0.8683355802913987
historical_close 0.8683355802913987
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