Delete row ('2763', '20440') from daily_volatility

ticker_id 2763
day 20440
implied_open 0.1301709645043779
implied_high 0.1539827263039592
implied_low 0.1301709645043779
implied_close 0.1476329231574041
historical_open 0.1190588089979066
historical_high 0.1190588089979066
historical_low 0.1190588089979066
historical_close 0.1190588089979066
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