Since this components and the original script are free the least you can do is keep the footer. I put a lot of work into configuring this component for joomla and the orginal script writer put in his fair share as well and we would like to get some type of credit for it for it. I will not provide support for any site that removes the footer. If you must you can go to http://www.maianscriptworld.co.uk/copyright-removal.html
to remove the copyright.