[gnome-shell] theme/dialogs: Clean up css a bit

[Florian Müllner <fmuellner src gnome org>]

commit a59da7583004f51ba3e1b7267a98796fd7aecae8
Author: Jonas Dreßler <verdre v0yd nl>
Date:   Tue Jan 21 11:32:24 2020 +0100

    theme/dialogs: Clean up css a bit
    
    Remove some unused classes and "deduplicate" selectors.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/942

 data/theme/gnome-shell-sass/widgets/_dialogs.scss | 25 ++++-------------------
 1 file changed, 4 insertions(+), 21 deletions(-)
---
diff --git a/data/theme/gnome-shell-sass/widgets/_dialogs.scss 
b/data/theme/gnome-shell-sass/widgets/_dialogs.scss
index f1960dba7f..4664b6710f 100644
--- a/data/theme/gnome-shell-sass/widgets/_dialogs.scss
+++ b/data/theme/gnome-shell-sass/widgets/_dialogs.scss
@@ -100,24 +100,15 @@
   padding-bottom: 1em;
 }
 
-.prompt-dialog-error-label {
-  @include fontsize($base_font_size - 1);
-  color: $warning_color;
-  padding-bottom: 8px;
-}
-
-.prompt-dialog-info-label {
-  @include fontsize($base_font_size - 1);
-  padding-bottom: 8px;
-}
-
+.prompt-dialog-error-label,
+.prompt-dialog-info-label,
 .prompt-dialog-null-label {
   @include fontsize($base_font_size - 1);
   padding-bottom: 8px;
 }
 
-.prompt-dialog-pim-box {
-  spacing: 1em;
+.prompt-dialog-error-label {
+  color: $warning_color;
 }
 
 .prompt-dialog-grid {
@@ -125,14 +116,6 @@
   spacing-columns: 1em;
 }
 
-.prompt-dialog-keyfiles-box {
-  spacing: 1em;
-}
-
-.prompt-dialog-button.button {
-  padding: 8px;
-}
-
 
 /* Polkit Dialog */