[gnome-builder] theme: remove workarounds for Adwaita header bars

[Christian Hergert <chergert src gnome org>]

commit 711ab57f213cc8d103e46f37dcafae51cb3936bb
Author: Christian Hergert <chergert redhat com>
Date:   Mon Nov 7 14:59:08 2016 -0800

    theme: remove workarounds for Adwaita header bars
    
    This is no longer needed as we should be inheriting style from Adwaita.

 data/theme/Adwaita-shared.css |   24 ------------------------
 1 files changed, 0 insertions(+), 24 deletions(-)
---
diff --git a/data/theme/Adwaita-shared.css b/data/theme/Adwaita-shared.css
index cb61635..8bc7a1b 100644
--- a/data/theme/Adwaita-shared.css
+++ b/data/theme/Adwaita-shared.css
@@ -3,30 +3,6 @@
 
 
 /*
- * Titlebar adjustments for workbench
- *
- * This is needed due to our placement of headerbar inside of a
- * stack. We were seeing black edges around the header bar, and
- * improper radius on the headerbar.
- */
-window.workbench stack.titlebar {
-  border-bottom: none;
-  border-radius: 6px 6px 0 0;
-  box-shadow: none;
-  padding: 0;
-}
-window.workbench stack.titlebar headerbar {
-  border-radius: 6px 6px 0 0;
-  margin: 0;
-  border-bottom: none;
-  box-shadow: 0 -1px 0 @borders inset;
-}
-window.workbench stack.titlebar headerbar:backdrop {
-  box-shadow: 0 -1px 0 alpha(@borders, 0.6) inset;
-}
-
-
-/*
  * Layout tab and tab bar tweaks
  *
  * The following makes the layout stack header look similar to a tab bar.