Merge branch 'removal-of-gl-md-pr-5' into 'master'

feat(css): Removed gl-md-pr-5 utility class once as it's moved to gitlab-ui

See merge request gitlab-org/gitlab!78190

app/assets/stylesheets/utilities.scss

@@ -305,13 +305,6 @@ $gl-line-height-42: px-to-rem(42px);
   }
 }
 
-// TODO: Move to @gitlab/ui by https://gitlab.com/gitlab-org/gitlab-ui/-/issues/1671
-.gl-md-pr-5 {
-  @include gl-media-breakpoint-up(md) {
-    padding-right: $gl-spacing-scale-5;
-  }
-}
-
 // Will be moved to @gitlab/ui by https://gitlab.com/gitlab-org/gitlab-ui/-/merge_requests/2600
 .gl-pr-10 {
   padding-right: $gl-spacing-scale-10;