[gnome-shell] theme/hotplug: Remove some dead code

[Jakub Steiner <jimmac src gnome org>]

commit 7ed39f79053e81355cea6930b49d9868e4f20efc
Author: nana-4 <hnmaigo gmail com>
Date:   Wed Jan 15 01:13:38 2020 +0900

    theme/hotplug: Remove some dead code
    
    Those style classes were removed about 5 years ago and no longer exist.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/931

 data/theme/gnome-shell-sass/widgets/_hotplug.scss | 33 -----------------------
 1 file changed, 33 deletions(-)
---
diff --git a/data/theme/gnome-shell-sass/widgets/_hotplug.scss 
b/data/theme/gnome-shell-sass/widgets/_hotplug.scss
index 89dd26617d..203c92021d 100644
--- a/data/theme/gnome-shell-sass/widgets/_hotplug.scss
+++ b/data/theme/gnome-shell-sass/widgets/_hotplug.scss
@@ -1,10 +1,5 @@
 // hotplug
 
-.hotplug-transient-box {
-  spacing: 6px;
-  padding: 2px 72px 2px 12px;
-}
-
 .hotplug-notification-item {
   @extend %bubble_button;
   border: none; box-shadow: none;
@@ -16,31 +11,3 @@
   icon-size: 24px;
   padding: 2px 5px;
 }
-
-.hotplug-resident-box { spacing: $base_spacing * 2; }
-
-.hotplug-resident-mount {
-  spacing: $base_spacing * 2;
-  border-radius: 4px;
-  &:hover { background-color: $hover_bg_color; }
-}
-
-.hotplug-resident-mount-label {
-  color: inherit;
-  padding-left: 6px;
-}
-
-.hotplug-resident-mount-icon {
-  icon-size: 24px;
-  padding-left: 6px;
-}
-
-.hotplug-resident-eject-icon {
-  icon-size: 16px;
-}
-
-.hotplug-resident-eject-button {
-  padding: 7px;
-  border-radius: 5px;
-  color: pink;
-}
\ No newline at end of file