Fix When login CI call sess_regenerate() but do not apply
config 'sess_regenerate_destroy' & always create new file
After this, a session folder have one file by user logged
and clean old session files in storage/sessions folder
To test : in application/config.php
`$config['sess_time_to_update'] = 3;`
see
https://bobcares.com/blog/codeigniter-generating-too-many-sessions-files-resolved