Fix: remove obsolete tags (in progress)

htdocs/ftp/admin/ftpclient.php

htdocs/ftp/index.php

htdocs/ftp/pre.inc.php

htdocs/imports/class/import.class.php

htdocs/imports/emptyexample.php

htdocs/imports/import.php

htdocs/imports/index.php

htdocs/includes/boxes/box_actions.php

htdocs/includes/boxes/box_bookmarks.php

htdocs/includes/boxes/box_clients.php

htdocs/includes/boxes/box_commandes.php

htdocs/includes/boxes/box_comptes.php

htdocs/includes/boxes/box_contacts.php

htdocs/includes/boxes/box_contracts.php

htdocs/includes/boxes/box_external_rss.php

htdocs/includes/boxes/box_factures.php

htdocs/includes/boxes/box_factures_fourn.php

htdocs/includes/boxes/box_factures_fourn_imp.php

htdocs/includes/boxes/box_factures_imp.php

htdocs/includes/boxes/box_fournisseurs.php