[gimp] plug-ins: Remove gamma parameter in openraster call to file-png-save.

[Jacob Boerema <jboerema src gnome org>]

commit d8009a000b665fc072f4966419a9f9db9dfc00cc
Author: Jacob Boerema <jgboerema gmail com>
Date:   Sat Jan 30 13:18:50 2021 -0500

    plug-ins: Remove gamma parameter in openraster call to file-png-save.
    
    Commit d57eafd1894de9b11f28a9ba937e14541c3af6f1 removed the
    gamma parameter for file-png-save so we have to remove it here too.

 plug-ins/python/file-openraster.py | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/plug-ins/python/file-openraster.py b/plug-ins/python/file-openraster.py
index d76933c819..cd7343e35d 100755
--- a/plug-ins/python/file-openraster.py
+++ b/plug-ins/python/file-openraster.py
@@ -230,7 +230,6 @@ def save_ora(procedure, run_mode, image, n_drawables, drawables, file, args, dat
             GObject.Value(GObject.TYPE_INT, compression),
             # write all PNG chunks except oFFs(ets)
             GObject.Value(GObject.TYPE_BOOLEAN, True),      # Save background color (bKGD chunk)
-            GObject.Value(GObject.TYPE_BOOLEAN, True),      # Save gamma (gAMA chunk)
             GObject.Value(GObject.TYPE_BOOLEAN, False),     # Save layer offset (oFFs chunk)
             GObject.Value(GObject.TYPE_BOOLEAN, True),      # Save resolution (pHYs chunk)
             GObject.Value(GObject.TYPE_BOOLEAN, True),      # Save creation time (tIME chunk)