[libadwaita] action-row: Remove unnecessary unparent

[Alexander Mikhaylenko <alexm src gnome org>]

commit 51563f10a9d402d8c5a1c21616687dda8ce715e1
Author: Maximiliano Sandoval R <msandova protonmail com>
Date:   Mon Jul 26 13:54:17 2021 +0200

    action-row: Remove unnecessary unparent
    
    ListBoxRow takes care of this already.

 src/adw-action-row.c | 2 --
 1 file changed, 2 deletions(-)
---
diff --git a/src/adw-action-row.c b/src/adw-action-row.c
index df7ba3bc..dd1a576c 100644
--- a/src/adw-action-row.c
+++ b/src/adw-action-row.c
@@ -206,8 +206,6 @@ adw_action_row_dispose (GObject *object)
 
   adw_action_row_set_activatable_widget (self, NULL);
 
-  gtk_widget_unparent (priv->header);
-
   G_OBJECT_CLASS (adw_action_row_parent_class)->dispose (object);
 }