[gimp] app: in GimpHistogram, don't initialize n_bins to 256

[Ell <ell src gnome org>]

commit 2a292b02e34e1fed8f7773af22d6614fef09ac37
Author: Ell <ell_se yahoo com>
Date:   Mon Nov 11 18:15:44 2019 +0200

    app: in GimpHistogram, don't initialize n_bins to 256
    
    ... it's no longer needed, and breaks the type's invariants.

 app/core/gimphistogram.c | 2 --
 1 file changed, 2 deletions(-)
---
diff --git a/app/core/gimphistogram.c b/app/core/gimphistogram.c
index 05d7944b5d..bbbd8e55f1 100644
--- a/app/core/gimphistogram.c
+++ b/app/core/gimphistogram.c
@@ -158,8 +158,6 @@ static void
 gimp_histogram_init (GimpHistogram *histogram)
 {
   histogram->priv = gimp_histogram_get_instance_private (histogram);
-
-  histogram->priv->n_bins = 256;
 }
 
 static void