[gtranslator] Remove non needed AutoPtr macro for GtrPo

[Daniel Garcia Moreno <danigm src gnome org>]

commit 6065fbbb41da85f8542ad6f3240e57eabbfc9bce
Author: Daniel García Moreno <dani danigm net>
Date:   Wed Mar 30 21:34:48 2022 +0200

    Remove non needed AutoPtr macro for GtrPo

 src/gtr-po.h | 2 --
 1 file changed, 2 deletions(-)
---
diff --git a/src/gtr-po.h b/src/gtr-po.h
index b47f1b83..6d3089e1 100644
--- a/src/gtr-po.h
+++ b/src/gtr-po.h
@@ -69,8 +69,6 @@ typedef enum
   GTR_PO_STATE_MODIFIED
 } GtrPoState;
 
-G_DEFINE_AUTOPTR_CLEANUP_FUNC(GtrPo, g_object_unref)
-
 /*
  * Public methods
  */