Update rounding-functions.md

Author: yariks5s

docs/zh/sql-reference/functions/rounding-functions.md

@@ -54,9 +54,6 @@ SELECT trunc(123.499, 1) as res；
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-通过DeepL.com（免费版）翻译
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 ## 圆形(x\[,N\]) {#rounding_functions-round}
 
 将值取整到指定的小数位数。