everything's fine, but you can't delete attachment :( Need to fix

__init__.py

 # -*- coding: utf-8 -*-
+import admin_doc

__openerp__.py

@@ -10,6 +10,5 @@
     'website': 'http://www.openerp-experts.com',
     'depends': [
         'base',
-        'ir_attachment',
     ],
     'data': [
@@ -14,5 +13,6 @@
     ],
     'data': [
+        'admin_doc.xml',
     ],
     'test': [
     ],