Remove unused empty state content.

ee/app/views/projects/issues/_service_desk_empty_state.html.haml

@@ -7,20 +7,8 @@
     .svg-content
       = render 'shared/empty_states/icons/service_desk_empty_state.svg'
   .col-xs-12.text-center
-    .text-content
-      - if has_button && current_user
-        %h4
-          The Issue Tracker is the place to add things that need to be improved or solved in a project
-        %p
-          Issues can be bugs, tasks or ideas to be discussed.
-          Also, issues are searchable and filterable.
-        - if project_select_button
-          = render 'shared/new_project_item_select', path: 'issues/new', label: 'New issue', type: :issues
-        - else
-          = link_to 'New issue', button_path, class: 'btn btn-new', title: 'New issue', id: 'new_issue_link'
-      - else
-        .text-center
-          %h4 Use Service desk to connect with your users (e.g. to offer customer support) through email right inside GitLab.
-          %p Have your users email incoming+victorwu/acme-lawncare-ios@gitlab.com. Those emails automatically become issues (with the comments becoming the email conversation) listed here.
-          %a{ href: '#' } Read more
+    .text-content.text-center
+      %h4 Use Service desk to connect with your users (e.g. to offer customer support) through email right inside GitLab.
+      %p Have your users email incoming+victorwu/acme-lawncare-ios@gitlab.com. Those emails automatically become issues (with the comments becoming the email conversation) listed here.
+      %a{ href: '#' } Read more