[four-in-a-row/arnaudb/wip/gtk4: 81/92] Clean CSS.

[Arnaud B. <arnaudb src gnome org>]

commit 5e515c883f9e7d0d9e63621e57ea06de2419060e
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Mon Apr 27 17:28:35 2020 +0200

    Clean CSS.

 data/four-in-a-row.css | 4 ----
 1 file changed, 4 deletions(-)
---
diff --git a/data/four-in-a-row.css b/data/four-in-a-row.css
index 56187ef..061ccb2 100644
--- a/data/four-in-a-row.css
+++ b/data/four-in-a-row.css
@@ -21,10 +21,6 @@ button.unfullscreen-button {
   margin:6px;
 }
 
-GtkButtonBox {
-  -GtkButtonBox-child-internal-pad-x:0;
-}
-
 .extra-thin-window.thin-window button.new-game-button { padding-left:12px; padding-right:12px; transition: 
padding 0 ease;
 /* hack: fix the double spacing around the centerwidget box, on extra-thin window */
                                                         margin-right:-12px; }