[0.85] not useful and bad for optimization

git-svn-id: https://forge.indepnet.net/svn/glpi/branches/0.85-work@20595 35612d4c-9d10-0410-837c-bf9dd1be60d7
[0.85] CS + fix comment + W3C

git-svn-id: https://forge.indepnet.net/svn/glpi/branches/0.85-work@20596 35612d4c-9d10-0410-837c-bf9dd1be60d7