Resolve rubocop warnings

app/views/clusters/clusters/_empty_state.html.haml

@@ -4,7 +4,6 @@
   .col-12
     .text-content
       %h4.text-center= s_('ClusterIntegration|Integrate Kubernetes cluster automation')
-      - link_to_help_page = link_to(_('Learn more about Kubernetes'), help_page_path('user/project/clusters/index'), target: '_blank', rel: 'noopener noreferrer')
       %p
         = s_('ClusterIntegration|Kubernetes clusters allow you to use review apps, deploy your applications, run your pipelines, and much more in an easy way.')
         - if clusterable.project?