Merge branch 'fix-settings-spacing' into 'master'

Fix project settings > merge request settings spacing

Closes #46718

See merge request gitlab-org/gitlab-ce!19444

app/assets/stylesheets/pages/settings.scss

@@ -102,10 +102,6 @@
   .form-text.text-muted {
     margin-top: 0;
   }
-
-  .label-light {
-    margin-bottom: 0;
-  }
 }
 
 .settings-list-icon {