fix(pdfcpu): correct sorting for the output paths of the split method

pkg/gotenberg/fs.go

@@ -3,10 +3,6 @@ package gotenberg
 import (
 	"fmt"
 	"os"
-	"path/filepath"
-	"sort"
-	"strings"
-	"time"
 
 	"github.com/google/uuid"
 )
@@ -88,46 +84,6 @@ func (fs *FileSystem) MkdirAll() (string, error) {
 	return path, nil
 }
 
-type fileWithModTime struct {
-	path    string
-	modTime time.Time
-}
-
-// WalkDir walks through the root level of a directory and returns a list of
-// files paths that match the specified file extension.
-func WalkDir(dir, ext string) ([]string, error) {
-	var files []fileWithModTime
-	err := filepath.Walk(dir, func(path string, info os.FileInfo, pathErr error) error {
-		if pathErr != nil {
-			return pathErr
-		}
-		if info.IsDir() {
-			return nil
-		}
-		if strings.EqualFold(filepath.Ext(info.Name()), ext) {
-			files = append(files, fileWithModTime{
-				path:    path,
-				modTime: info.ModTime(),
-			})
-		}
-		return nil
-	})
-	if err != nil {
-		return nil, err
-	}
-
-	sort.Slice(files, func(i, j int) bool {
-		return files[i].modTime.Before(files[j].modTime)
-	})
-
-	sortedPaths := make([]string, len(files))
-	for i, f := range files {
-		sortedPaths[i] = f.path
-	}
-
-	return sortedPaths, nil
-}
-
 // Interface guards.
 var (
 	_ MkdirAll   = (*OsMkdirAll)(nil)