Remove EditableHelper and move method to IssuablesHelper

app/helpers/editable_helper.rb

-module EditableHelper
-  def updated_at_by(editable)
-    return {} unless editable.is_edited?
-
-    {
-      updated_at: editable.updated_at.to_time.iso8601,
-      updated_by: {
-        name: editable.last_edited_by.name,
-        path: user_path(editable.last_edited_by)
-      }
-    }
-  end
-end

app/helpers/issuables_helper.rb

 module IssuablesHelper
   include GitlabRoutingHelper
-  include EditableHelper
 
   def sidebar_gutter_toggle_icon
     sidebar_gutter_collapsed? ? icon('angle-double-left', { 'aria-hidden': 'true' }) : icon('angle-double-right', { 'aria-hidden': 'true' })
@@ -285,4 +284,16 @@ module IssuablesHelper
 
     data.merge(updated_at_by)
   end
+
+  def updated_at_by(issuable)
+    return {} unless issuable.is_edited?
+
+    {
+      updated_at: issuable.updated_at.to_time.iso8601,
+      updated_by: {
+        name: issuable.last_edited_by.name,
+        path: user_path(issuable.last_edited_by)
+      }
+    }
+  end
 end

spec/helpers/editable_helper_spec.rb

-require 'spec_helper'
-
-describe EditableHelper do
-  describe '#updated_at_by' do
-    let(:user) { create(:user) }
-    let(:unedited_editable) { create(:issue) }
-    let(:edited_editable) { create(:issue, last_edited_by: user, created_at: 3.days.ago, updated_at: 2.days.ago, last_edited_at: 2.days.ago) }
-    let(:edited_updated_at_by) do
-      {
-        updated_at: edited_editable.updated_at.to_time.iso8601,
-        updated_by: {
-          name: user.name,
-          path: user_path(user)
-        }
-      }
-    end
-
-    it { expect(helper.updated_at_by(unedited_editable)).to eq({}) }
-    it { expect(helper.updated_at_by(edited_editable)).to eq(edited_updated_at_by) }
-  end
-end

spec/helpers/issuables_helper_spec.rb

@@ -192,4 +192,22 @@ describe IssuablesHelper do
       expect(helper.issuable_filter_present?).to be_falsey
     end
   end
+
+  describe '#updated_at_by' do
+    let(:user) { create(:user) }
+    let(:unedited_issuable) { create(:issue) }
+    let(:edited_issuable) { create(:issue, last_edited_by: user, created_at: 3.days.ago, updated_at: 2.days.ago, last_edited_at: 2.days.ago) }
+    let(:edited_updated_at_by) do
+      {
+        updated_at: edited_issuable.updated_at.to_time.iso8601,
+        updated_by: {
+          name: user.name,
+          path: user_path(user)
+        }
+      }
+    end
+
+    it { expect(helper.updated_at_by(unedited_issuable)).to eq({}) }
+    it { expect(helper.updated_at_by(edited_issuable)).to eq(edited_updated_at_by) }
+  end
 end