Merge branch 'mk/remove-unused-code' into 'master'

Remove unused code

See merge request gitlab-org/gitlab-ce!27557

app/models/concerns/storage/legacy_namespace.rb

@@ -104,11 +104,5 @@ module Storage
         end
       end
     end
-
-    def remove_legacy_exports!
-      legacy_export_path = File.join(Gitlab::ImportExport.storage_path, full_path_was)
-
-      FileUtils.rm_rf(legacy_export_path)
-    end
   end
 end