[evince] shell: Fix space consistency in headerbar

[Germán Poo-Caamaño <gpoo src gnome org>]

commit c6fc14f7d9f5344df71e4a6f1c5cb42c6107848f
Author: Germán Poo-Caamaño <gpoo gnome org>
Date:   Fri Jun 29 23:23:31 2018 -0400

    shell: Fix space consistency in headerbar
    
    Reintroduced inconsistent space after reverted commit 6e0dbaea

 shell/ev-toolbar.c | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/shell/ev-toolbar.c b/shell/ev-toolbar.c
index 0980a8df..581aef8f 100644
--- a/shell/ev-toolbar.c
+++ b/shell/ev-toolbar.c
@@ -207,7 +207,6 @@ ev_toolbar_constructed (GObject *object)
                                            _("Open an existing document"));
         ev_toolbar->priv->open_button = button;
         gtk_container_add (GTK_CONTAINER (ev_toolbar), button);
-        gtk_widget_set_margin_end (button, 6);
 
         /* Page selector */
         /* Use EvPageActionWidget for now, since the page selector action is also used by the previewer */