Set danger variant to remove group confirmation

Update label for the remove button

app/views/admin/groups/_group.html.haml

@@ -33,4 +33,4 @@
 
   .controls.gl-flex-shrink-0.gl-ml-5
     = link_to _('Edit'), admin_group_edit_path(group), id: "edit_#{dom_id(group)}", class: 'btn gl-button btn-default'
-    = link_to _('Delete'), [:admin, group], data: { confirm: _("Are you sure you want to remove %{group_name}?") % { group_name: group.name } }, method: :delete, class: 'gl-button btn btn-danger'
+    = link_to _('Delete'), [:admin, group], aria: { label: _('Remove') }, data: { confirm: _("Are you sure you want to remove %{group_name}?") % { group_name: group.name }, confirm_btn_variant: 'danger' }, method: :delete, class: 'gl-button btn btn-danger'