diff --git a/internal/common/file.go b/internal/common/file.go
deleted file mode 100644
index 03dd024..0000000
--- a/internal/common/file.go
+++ /dev/null
@@ -1,29 +0,0 @@
-package common
-
-import (
-	"mime/multipart"
-	"os"
-)
-
-// SaveUploadedFile 将 multipart.File 内容写入目标路径
-func SaveUploadedFile(file multipart.File, dst string) error {
-	out, err := os.Create(dst) //nolint:gosec // dst 为服务器内部路径
-	if err != nil {
-		return err
-	}
-	defer func() { _ = out.Close() }()
-
-	buf := make([]byte, 32*1024)
-	for {
-		n, err := file.Read(buf)
-		if n > 0 {
-			if _, writeErr := out.Write(buf[:n]); writeErr != nil {
-				return writeErr
-			}
-		}
-		if err != nil {
-			break
-		}
-	}
-	return nil
-}