Disable AbcSize cop for HourlyRate#history_for_user

Author: klaustopher

modules/costs/app/models/hourly_rate.rb

@@ -44,7 +44,7 @@ def next(reference_date = valid_from)
       .first
   end
 
-  def self.history_for_user(usr)
+  def self.history_for_user(usr) # rubocop:disable Metrics/AbcSize
     projects_with_costs = Project.has_module(:costs)
                                         .active
                                         .visible