[gnome-builder] Remove notebook border

[Christian Hergert <chergert src gnome org>]

commit 9ed78d47b590ad89b338dd9d2165d84a6f068b77
Author: Trinh Anh Ngoc <atw1990 gmail com>
Date:   Mon Nov 24 11:20:03 2014 +0700

    Remove notebook border
    
    https://bugzilla.gnome.org/show_bug.cgi?id=740606

 src/tabs/gb-notebook.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/tabs/gb-notebook.c b/src/tabs/gb-notebook.c
index 349861b..56ea351 100644
--- a/src/tabs/gb-notebook.c
+++ b/src/tabs/gb-notebook.c
@@ -185,4 +185,5 @@ static void
 gb_notebook_init (GbNotebook *notebook)
 {
   gtk_notebook_set_scrollable (GTK_NOTEBOOK (notebook), TRUE);
+  gtk_notebook_set_show_border (GTK_NOTEBOOK (notebook), FALSE);
 }