Remove issue type in build service params

app/services/issues/build_service.rb

@@ -65,7 +65,7 @@ module Issues
     private
     def whitelisted_issue_params
-      base_params = [:title, :description, :confidential, :issue_type]
+      base_params = [:title, :description, :confidential]
       admin_params = [:milestone_id]
       if can?(current_user, :admin_issue, project)