Anyway, all you need to do is open /index.php in the root of your osTicket Awesome directory.
Delete lines 66 and 75
<?php echo __(‘Please provide as much detail as possible so we can best assist you. To update a previously submitted ticket, please login.’);?>
and
<?php echo __(‘We provide archives and history of all your current and past support requests complete with responses.’);?>
Simply replace those lines with the text that you want to appear.