[gimp/metadata-browser] remove obsolete workaround for gegl

[Roman Joost <romanofski src gnome org>]

commit 154997f34ab6c8a7d6c33d4a7595b15b35713bc0
Author: Simon Budig <simon budig de>
Date:   Thu May 3 01:16:02 2012 +0200

    remove obsolete workaround for gegl

 plug-ins/common/file-png.c |    4 ----
 1 files changed, 0 insertions(+), 4 deletions(-)
---
diff --git a/plug-ins/common/file-png.c b/plug-ins/common/file-png.c
index a89abff..e95d9fd 100644
--- a/plug-ins/common/file-png.c
+++ b/plug-ins/common/file-png.c
@@ -1384,10 +1384,6 @@ save_image (const gchar  *filename,
   height = gegl_buffer_get_height (buffer);
   type = gimp_drawable_type (drawable_ID);
 
-  /* this is a stupid workaround for some caching issues in GEGL */
-#warning remove this when gegl is fixed
-  gegl_buffer_copy (buffer, NULL, buffer, NULL);
-
   /*
    * Initialise remap[]
    */