[gtk/rubberband-again] Drop gtk_multi_selection-copy

[Matthias Clasen <matthiasc src gnome org>]

commit 7dfeeccf451945a874dddddea87ec7d4332035ca
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Jun 5 00:15:09 2020 -0400

    Drop gtk_multi_selection-copy
    
    It is not used anymore.

 gtk/gtkmultiselection.c | 48 ------------------------------------------------
 gtk/gtkmultiselection.h |  2 --
 2 files changed, 50 deletions(-)
---
diff --git a/gtk/gtkmultiselection.c b/gtk/gtkmultiselection.c
index a0ffb92fee..00d02998d5 100644
--- a/gtk/gtkmultiselection.c
+++ b/gtk/gtkmultiselection.c
@@ -387,51 +387,3 @@ gtk_multi_selection_new (GListModel *model)
                        "model", model,
                        NULL);
 }
-
-/**
- * gtk_multi_selection_copy:
- * @selection: the #GtkSelectionModel to copy
- *
- * Creates a #GtkMultiSelection that has the same underlying
- * model and the same selected items as @selection.
- *
- * Returns: (transfer full): a new #GtkMultiSelection
- */
-GtkMultiSelection *
-gtk_multi_selection_copy (GtkSelectionModel *selection)
-{
-  GtkMultiSelection *copy;
-  GListModel *model;
-
-  g_object_get (selection, "model", &model, NULL);
-
-  copy = GTK_MULTI_SELECTION (gtk_multi_selection_new (model));
-
-  if (GTK_IS_MULTI_SELECTION (selection))
-    {
-      GtkMultiSelection *multi = GTK_MULTI_SELECTION (selection);
-
-      gtk_set_free (copy->selected);
-      copy->selected = gtk_set_copy (multi->selected);
-      copy->last_selected = multi->last_selected;
-    }
-  else
-    {
-      guint pos, n;
-      guint start, n_items;
-      gboolean selected;
-
-      n = g_list_model_get_n_items (model);
-      n_items = 0;
-      for (pos = 0; pos < n; pos += n_items)
-        {
-          gtk_selection_model_query_range (selection, pos, &start, &n_items, &selected);
-          if (selected)
-            gtk_selection_model_select_range (GTK_SELECTION_MODEL (copy), start, n_items, FALSE);
-        }
-    }
-
-  g_object_unref (model);
-
-  return copy;
-}
diff --git a/gtk/gtkmultiselection.h b/gtk/gtkmultiselection.h
index e4147c2a66..2045e858ed 100644
--- a/gtk/gtkmultiselection.h
+++ b/gtk/gtkmultiselection.h
@@ -33,8 +33,6 @@ G_DECLARE_FINAL_TYPE (GtkMultiSelection, gtk_multi_selection, GTK, MULTI_SELECTI
 GDK_AVAILABLE_IN_ALL
 GListModel *    gtk_multi_selection_new                (GListModel           *model);
 
-GDK_AVAILABLE_IN_ALL
-GtkMultiSelection * gtk_multi_selection_copy           (GtkSelectionModel    *selection);
 
 G_END_DECLS