Remove duplicate classes

app/views/admin/projects/show.html.haml

@@ -166,7 +166,7 @@
           .float-right
             = link_to admin_group_path(@group), class: 'btn btn-sm' do
               = icon('pencil-square-o', text: 'Manage access')
-        %ul.content-list.content-list.members-list
+        %ul.content-list.members-list
           = render partial: 'shared/members/member', collection: @group_members, as: :member, locals: { show_controls: false }
         .card-footer
           = paginate @group_members, param_name: 'group_members_page', theme: 'gitlab'
@@ -180,7 +180,7 @@
         %span.badge.badge-pill= @project.users.size
         .float-right
           = link_to icon('pencil-square-o', text: 'Manage access'), polymorphic_url([@project, :members]), class: "btn btn-sm"
-      %ul.content-list.project_members.content-list.members-list
+      %ul.content-list.project_members.members-list
         = render partial: 'shared/members/member', collection: @project_members, as: :member, locals: { show_controls: false }
       .card-footer
         = paginate @project_members, param_name: 'project_members_page', theme: 'gitlab'