Remove current_user && when can? is used

app/views/admin/builds/_build.html.haml

@@ -63,7 +63,7 @@
       - if can?(current_user, :read_build, project) && build.artifacts?
         = link_to build.artifacts_download_url, title: 'Download artifacts' do
           %i.fa.fa-download
-      - if current_user && can?(current_user, :update_build, build.project)
+      - if can?(current_user, :update_build, build.project)
         - if build.active?
           - if build.cancel_url
             = link_to build.cancel_url, method: :post, title: 'Cancel' do

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

@@ -101,7 +101,7 @@
       .build-widget
         %h4.title
           Build ##{@build.id}
-          - if current_user && can?(current_user, :update_build, @project)
+          - if can?(current_user, :update_build, @project)
             .pull-right
               - if @build.cancel_url
                 = link_to "Cancel", @build.cancel_url, class: 'btn btn-sm btn-danger', method: :post