Index: app/models/issue.rb
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- app/models/issue.rb	(date 1516540988000)
+++ app/models/issue.rb	(date 1516542238000)
@@ -1852,12 +1852,6 @@
     @previous_assigned_to_id = assigned_to_id_was
   end
 
-  # Clears the previous assignee at the end of after_save callbacks
-  def clear_assigned_to_was
-    @assigned_to_was = nil
-    @previous_assigned_to_id = nil
-  end
-
   def clear_disabled_fields
     if tracker
       tracker.disabled_core_fields.each do |attribute|