[gimp/gimp-2-10] Revert "app: save images with fractional grid coordinates as version-10 XCFs"

[Ell <ell src gnome org>]

commit 09863478dbae467c50b72e7af0783e81c443f1c5
Author: Ell <ell_se yahoo com>
Date:   Wed Dec 5 13:39:00 2018 -0500

    Revert "app: save images with fractional grid coordinates as version-10 XCFs"
    
    Actually, image grids are saved as parasites, so even though older
    GIMP versions round their coordinates upon loading, they maintain
    the fractional coordinates when re-saving the image, hence bumping
    the XCF version is not really necessary.
    
    This reverts commit 13119efda33a7aba323dc13e6a56207a15a9f000.
    
    (cherry picked from commit 411ddb7e485ab05f032adeef7ea9369edc1d27a0)

 app/core/gimpimage.c | 20 --------------------
 1 file changed, 20 deletions(-)
---
diff --git a/app/core/gimpimage.c b/app/core/gimpimage.c
index 449ab0fc25..167f5e2646 100644
--- a/app/core/gimpimage.c
+++ b/app/core/gimpimage.c
@@ -53,7 +53,6 @@
 #include "gimpimage-color-profile.h"
 #include "gimpimage-colormap.h"
 #include "gimpimage-guides.h"
-#include "gimpimage-grid.h"
 #include "gimpimage-item-list.h"
 #include "gimpimage-metadata.h"
 #include "gimpimage-sample-points.h"
@@ -2514,25 +2513,6 @@ gimp_image_get_xcf_version (GimpImage    *image,
       version = MAX (7, version);
     }
 
-  /* need version 10 for fractional grid coordinates */
-  if (gimp_image_get_grid (image))
-    {
-      GimpGrid *grid = gimp_image_get_grid (image);
-      gdouble   xspacing, yspacing;
-      gdouble   xoffset,  yoffset;
-
-      gimp_grid_get_spacing (grid, &xspacing, &yspacing);
-      gimp_grid_get_offset  (grid, &xoffset,  &yoffset);
-
-      if (xspacing != floor (xspacing) || yspacing != floor (yspacing) ||
-          xoffset  != floor (xoffset)  || yoffset  != floor (yoffset))
-        {
-          ADD_REASON (g_strdup_printf (_("Fractional grid coordinates were "
-                                         "added in %s"), "GIMP 2.10"));
-          version = MAX (10, version);
-        }
-    }
-
   /* need version 12 for > 8-bit images for proper endian swapping */
   if (gimp_image_get_precision (image) > GIMP_PRECISION_U8_GAMMA)
     version = MAX (12, version);