[libadwaita/wip/exalm/background-colors: 1/8] stylesheet: Remove notebook header background

[Alexander Mikhaylenko <alexm src gnome org>]

commit 716bfbb4df94c8f5827b0f20caad3440ce7d3da1
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Wed Oct 20 00:03:02 2021 +0500

    stylesheet: Remove notebook header background
    
    I didn't want to do it initially, but it doesn't seem to break anything.

 src/stylesheet/widgets/_notebook.scss | 2 --
 1 file changed, 2 deletions(-)
---
diff --git a/src/stylesheet/widgets/_notebook.scss b/src/stylesheet/widgets/_notebook.scss
index 723d4368..c1874b70 100644
--- a/src/stylesheet/widgets/_notebook.scss
+++ b/src/stylesheet/widgets/_notebook.scss
@@ -5,9 +5,7 @@ notebook {
     padding: 1px;
     border-color: $borders_color;
     border-width: 1px;
-    background-color: $dark_fill;
     background-clip: padding-box;
-    color: $fg_color;
 
     > tabs { margin: -1px; }