fix bogus add permission for invoice cell

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@22879 20353a03-c40f-0410-a6d1-a30d3c3de9de

bt5/erp5_invoicing/PortalTypeTemplateItem/portal_types/Invoice%20Cell.xml

@@ -100,7 +100,7 @@
         </item>
         <item>
             <key> <string>permission</string> </key>
-            <value> <string>*</string> </value>
+            <value> <string></string> </value>
         </item>
         <item>
             <key> <string>property_sheet_list</string> </key>

bt5/erp5_invoicing/bt/revision

-118
\ No newline at end of file
+120
\ No newline at end of file