small string split join optimization

internal/utils/strutils/strconv.go

@@ -1,17 +1,7 @@
 package strutils
 
 import (
-	"errors"
 	"strconv"
-
-	E "github.com/yusing/go-proxy/internal/error"
 )
 
-func Atoi(s string) (int, E.Error) {
-	val, err := strconv.Atoi(s)
-	if err != nil {
-		return val, E.From(errors.Unwrap(err)).Subject(s)
-	}
-
-	return val, nil
-}
+var Atoi = strconv.Atoi