Merge branch 'remove-dead-code' into 'master'

Simplify test code

See merge request gitlab-org/gitlab!22805

qa/qa/page/project/issue/index.rb

@@ -10,6 +10,7 @@ module QA
           end
 
           view 'app/views/projects/issues/_issue.html.haml' do
+            element :issue
             element :issue_link, 'link_to issue.title' # rubocop:disable QA/ElementWithPattern
           end
 
@@ -38,7 +39,7 @@ module QA
           end
 
           def has_issue?(issue)
-            has_element? :issue, issue_title: issue.to_s
+            has_element? :issue, issue_title: issue.title
           end
         end
       end

qa/qa/resource/issue.rb

@@ -38,10 +38,6 @@ module QA
         end
       end
 
-      def to_s
-        @title
-      end
-
       def api_get_path
         "/projects/#{project.id}/issues/#{id}"
       end