Reorganise

lib/paapi/item.rb

@@ -101,18 +101,14 @@ module Paapi
       get(%w{ItemInfo ManufactureInfo ItemPartNumber DisplayValue})
     end
 
-    def package
-      get(%w{ItemInfo TechnicalInfo Formats DisplayValues})
-    end
-
-    def part_number
-      get(%w{ItemInfo ManufactureInfo ItemPartNumber})
-    end
-
     def model
       get(%w{ItemInfo ManufactureInfo Model})
     end
 
+    def package
+      get(%w{ItemInfo TechnicalInfo Formats DisplayValues})
+    end
+
     def kindle?
       !package.nil? && package&.include?('Kindle eBook')
     end