[gthumb] removed an unused style

[Paolo Bacchilega <paobac src gnome org>]

commit 2760d662dfe42f1f016cb827c0b3dedf290953cc
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Tue Dec 23 12:32:17 2014 +0100

    removed an unused style

 gthumb/resources/gthumb.css |    8 --------
 1 files changed, 0 insertions(+), 8 deletions(-)
---
diff --git a/gthumb/resources/gthumb.css b/gthumb/resources/gthumb.css
index 8239445..220155e 100644
--- a/gthumb/resources/gthumb.css
+++ b/gthumb/resources/gthumb.css
@@ -137,11 +137,3 @@ GtkButton.filter-preview:checked {
        background-color: @theme_unfocused_selected_bg_color;
        color: @theme_unfocused_selected_fg_color;
 }
-
-/* -- headerbar inside the toolbox -- */
-
-GthToolbox .header-bar {
-       border-radius: 0;
-       box-shadow: none;
-       background-image: none;
-}