[libadwaita/wip/exalm/style] window: Drop css node docs

[Alexander Mikhaylenko <alexm src gnome org>]

commit cecd72b207f4d1cc4a949fa4ed1465389b91d542
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Wed Apr 7 13:42:03 2021 +0500

    window: Drop css node docs
    
    They are outdated and there's nothing special about `AdwWindow` anymore.

 src/adw-window.c | 15 ---------------
 1 file changed, 15 deletions(-)
---
diff --git a/src/adw-window.c b/src/adw-window.c
index 4f78744..67a427e 100644
--- a/src/adw-window.c
+++ b/src/adw-window.c
@@ -46,21 +46,6 @@
  * Using gtk_window_get_titlebar() and gtk_window_set_titlebar() is not
  * supported and will result in a crash.
  *
- * # CSS nodes
- *
- * #AdwWindow has a main CSS node with the name window and style classes
- * .background, .csd and .unified.
- *
- * The .solid-csd style class on the main node is used for client-side
- * decorations without invisible borders.
- *
- * #AdwWindow also represents window states with the following
- * style classes on the main node: .tiled, .maximized, .fullscreen.
- *
- * It contains the subnodes decoration for window shadow and/or border,
- * decoration-overlay for the sheen on top of the window, widget.titlebar, and
- * deck, which contains the child inside the window.
- *
  * Since: 1.0
  */