Delete row ('2763', '20749') from daily_volatility

ticker_id 2763
day 20749
implied_open 0.1492203739440429
implied_high 0.1555701770905979
implied_low 0.1381082184375716
implied_close 0.1428705707974879
historical_open 0.1539827263039592
historical_high 0.1539827263039592
historical_low 0.1539827263039592
historical_close 0.1539827263039592
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