[gnome-shell] theme/notifications: Remove some duplicate or pointless styling

[Florian Müllner <fmuellner src gnome org>]

commit 900d36d0ead97a63c726a3f94c532d6b6522c635
Author: nana-4 <hnmaigo gmail com>
Date:   Wed Feb 5 01:07:55 2020 +0900

    theme/notifications: Remove some duplicate or pointless styling
    
    Those styles are defined in .message and do not need to be overridden in
    .notification-banner.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/957

 .../gnome-shell-sass/widgets/_notifications.scss     | 20 --------------------
 1 file changed, 20 deletions(-)
---
diff --git a/data/theme/gnome-shell-sass/widgets/_notifications.scss 
b/data/theme/gnome-shell-sass/widgets/_notifications.scss
index cc69379640..7d0cda2ba2 100644
--- a/data/theme/gnome-shell-sass/widgets/_notifications.scss
+++ b/data/theme/gnome-shell-sass/widgets/_notifications.scss
@@ -7,28 +7,8 @@ $notification_banner_width: 34em;
 .notification-banner {
   min-height: $notification_banner_height;
   width: $notification_banner_width;
-  @include fontsize($base_font_size);
-  margin: $base_margin;
-  border-radius: $modal_radius;
-
-  .message-title { color: $fg_color }
-  .message-content { color: $fg_color; }
-
-  &:hover { background: $bg_color; }
-  &, &:focus, &:active {
-    background-color: $bg_color;
-    .message-title { color: $fg_color }
-    .message-content { color: $fg_color; }
-  }
-
-  // icon
-  .message-icon-bin > StIcon {
-    icon-size: $base_icon_size * 2;
-    color: $fg_color;
-  }
 
   .notification-actions {
-    padding-top: 0;
     spacing: 0;
   }