This reverts commit
40d4441fd85742837d85d8509dc89355d39a1cdc.
The accessible parent of the child widget in a GtkStackPage is cleared
when the GtkATContext gets disposed, so we don't need to unset it
ourselves. This also avoids a temporary vivification of the GtkATContext
during dispose.
if (priv->last_visible_child == child_info)
priv->last_visible_child = NULL;
- gtk_accessible_set_accessible_parent (GTK_ACCESSIBLE (child), NULL, NULL);
gtk_widget_unparent (child);
g_clear_object (&child_info->widget);