If I get what you are saying, you want to remove the Bandicut watermark.
Well you can do so by buying a license for Bandicut.
You can't get rid of it otherwise, as it's Bandisoft's way of getting something in return from you for giving you a free trial for their software - with only minor restrictions.
In theory you could cut off that part of the video using another editor, but I'm sure that would violate Bandicut's EULA (end user license agreement or license).
I hope I was able to help you,
Thank you for reading my post. I hope you understand my "English".
I'm the German translator for some of Bandisoft's products and websites
(mostly Bandicut and Honeycam).