FEAT #15350 TIME 0:15 clean useless code (entities)

modules/entities/admin_difflist_type.php

modules/entities/admin_difflist_type_validate.php

modules/entities/admin_difflist_types.php

modules/entities/class/Entity.php

modules/entities/class/EntityControler.php

modules/entities/class/EntityControler_Abstract.php

modules/entities/class/Entity_Abstract.php

modules/entities/class/class_get_barcode.php

modules/entities/class/class_get_barcode_Abstract.php

modules/entities/class/class_manage_entities.php

modules/entities/class/class_manage_entities_Abstract.php

modules/entities/class/class_manage_listdiff.php

modules/entities/class/class_manage_listdiff_Abstract.php

modules/entities/class/class_modules_tools.php

modules/entities/class/class_modules_tools_Abstract.php

modules/entities/class/class_users_entities.php

modules/entities/class/class_users_entities_Abstract.php

modules/entities/css/module.css

modules/entities/difflist_display.php

modules/entities/difflist_history_display.php