[gimp/gtk3-port: 255/457] Get rid of all GtkAlignments, use GtkWidget align/margin instead

[Michael Natterer <mitch src gnome org>]

commit 2c26b4f15bcf5058d57002fc1048e66f35169e1d
Author: Michael Natterer <mitch gimp org>
Date:   Sun Apr 29 03:55:55 2018 +0200

    Get rid of all GtkAlignments, use GtkWidget align/margin instead

 app/dialogs/palette-import-dialog.c |    8 ++------
 1 files changed, 2 insertions(+), 6 deletions(-)
---
diff --git a/app/dialogs/palette-import-dialog.c b/app/dialogs/palette-import-dialog.c
index be86aa7..6e2cb96 100644
--- a/app/dialogs/palette-import-dialog.c
+++ b/app/dialogs/palette-import-dialog.c
@@ -139,7 +139,6 @@ palette_import_dialog_new (GimpContext *context)
   GtkWidget    *frame;
   GtkWidget    *vbox;
   GtkWidget    *table;
-  GtkWidget    *abox;
   GtkSizeGroup *size_group;
   GSList       *group = NULL;
 
@@ -362,16 +361,13 @@ palette_import_dialog_new (GimpContext *context)
   gtk_container_add (GTK_CONTAINER (frame), vbox);
   gtk_widget_show (vbox);
 
-  abox = gtk_alignment_new (0.0, 0.0, 0.0, 0.0);
-  gtk_box_pack_start (GTK_BOX (vbox), abox, FALSE, FALSE, 0);
-  gtk_widget_show (abox);
-
   private->preview = gimp_view_new_full_by_types (private->context,
                                                  GIMP_TYPE_VIEW,
                                                  GIMP_TYPE_PALETTE,
                                                  192, 192, 1,
                                                  TRUE, FALSE, FALSE);
-  gtk_container_add (GTK_CONTAINER (abox), private->preview);
+  gtk_widget_set_halign (private->preview, 0.0);
+  gtk_box_pack_start (GTK_BOX (vbox), private->preview, FALSE, FALSE, 0);
   gtk_widget_show (private->preview);
 
   private->no_colors_label =