[gimp] core: remove unneeded call to gegl_buffer_sample_cleanup

[Michael Henning <mhenning src gnome org>]

commit 229ab7caf10d71d5b90b4165a66e9f0dbfd2bdeb
Author: Michael Henning <drawoc darkrefraction com>
Date:   Sun Apr 7 12:30:29 2013 -0400

    core: remove unneeded call to gegl_buffer_sample_cleanup

 app/core/gimpimage-contiguous-region.c |    3 ---
 1 files changed, 0 insertions(+), 3 deletions(-)
---
diff --git a/app/core/gimpimage-contiguous-region.c b/app/core/gimpimage-contiguous-region.c
index 2d1b227..64edbbc 100644
--- a/app/core/gimpimage-contiguous-region.c
+++ b/app/core/gimpimage-contiguous-region.c
@@ -439,9 +439,6 @@ find_contiguous_segment (const gfloat        *col,
                    0, babl_format ("Y float"), &mask_row[*start],
                    GEGL_AUTO_ROWSTRIDE);
 
-  /* XXX this should now be needed and is a performance killer */
-  gegl_buffer_sample_cleanup (mask_buffer);
-
   return TRUE;
 }