Adwaita: Remove a shadow-type leftover

After commit edae2a8dc500b7af29928e5eb6dfc305726ce6e0, frames always
draw frames. So, remove the unused frame.flat styling.

diff --git a/gtk/theme/Adwaita/_common.scss b/gtk/theme/Adwaita/_common.scss
index 8ab52c80108590ee1228e16611413e03811eb6ac..64db0790fb94f83c563a79d60dfdb540a7a43270 100644 (file)
--- a/gtk/theme/Adwaita/_common.scss
+++ b/gtk/theme/Adwaita/_common.scss
@@ -3010,8 +3010,6 @@ frame,
   padding: 0;
   border-radius: 0;
   border: 1px solid $borders_color;
-
-  &.flat { border-style: none; }
 }
 
 actionbar > revealer >  box {