Delete row ('40', '20483') from daily_volatility

ticker_id 40
day 20483
implied_open 0.2952658463148083
implied_high 0.3032031002480021
implied_low 0.2825662400216983
implied_close 0.2905034939548921
historical_open 0.3111403541811958
historical_high 0.3111403541811958
historical_low 0.3111403541811958
historical_close 0.3111403541811958
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