Remove title_for_issue helper

app/helpers/issues_helper.rb

@@ -43,17 +43,6 @@ module IssuesHelper
     end
   end
 
-  def title_for_issue(issue_iid, project = @project)
-    return '' if project.nil?
-
-    if project.default_issues_tracker?
-      issue = project.issues.where(iid: issue_iid).first
-      return issue.title if issue
-    end
-
-    ''
-  end
-
   def issue_timestamp(issue)
     # Shows the created at time and the updated at time if different
     ts = "#{time_ago_with_tooltip(issue.created_at, 'bottom', 'note_created_ago')}"
@@ -110,5 +99,5 @@ module IssuesHelper
   end
 
   # Required for Gitlab::Markdown::IssueReferenceFilter
-  module_function :url_for_issue, :title_for_issue
+  module_function :url_for_issue
 end

app/models/external_issue.rb

@@ -15,6 +15,10 @@ class ExternalIssue
     @issue_identifier.to_s
   end
 
+  def title
+    "External Issue #{self}"
+  end
+
   def ==(other)
     other.is_a?(self.class) && (to_s == other.to_s)
   end

lib/gitlab/markdown/issue_reference_filter.rb

@@ -52,7 +52,7 @@ module Gitlab
 
             url = url_for_issue(id, project, only_path: context[:only_path])
 
-            title = escape_once("Issue: #{title_for_issue(id, project)}")
+            title = escape_once("Issue: #{issue.title}")
             klass = reference_class(:issue)
 
             %(<a href="#{url}"
@@ -67,10 +67,6 @@ module Gitlab
       def url_for_issue(*args)
         IssuesHelper.url_for_issue(*args)
       end
-
-      def title_for_issue(*args)
-        IssuesHelper.title_for_issue(*args)
-      end
     end
   end
 end

spec/helpers/issues_helper_spec.rb

@@ -5,24 +5,6 @@ describe IssuesHelper do
   let(:issue) { create :issue, project: project }
   let(:ext_project) { create :redmine_project }
 
-  describe "title_for_issue" do
-    it "should return issue title if used internal tracker" do
-      @project = project
-      expect(title_for_issue(issue.iid)).to eq issue.title
-    end
-
-    it "should always return empty string if used external tracker" do
-      @project = ext_project
-      expect(title_for_issue(rand(100))).to eq ""
-    end
-
-    it "should always return empty string if project nil" do
-      @project = nil
-
-      expect(title_for_issue(rand(100))).to eq ""
-    end
-  end
-
   describe "url_for_project_issues" do
     let(:project_url) { ext_project.external_issue_tracker.project_url }
     let(:ext_expected) do