Remove Unused Default Parameter

A parameter has a default value, but the method is never called without the parameter.

Remove the default value

def product_count_items(search_criteria=nil)
  criteria = search_criteria | @search_criteria
  ProductCountItem.find_all_by_criteria(criteria)
end   

def product_count_items(search_criteria)
  ProductCountItem.find_all_by_criteria(search_criteria)
end