BuddyPress.org

wordpress and buddypress are not proprietary scripts, you do not have to pay to delete the copyright or the product name, there is no license related to the product name.

the reason why you see the names and links to the original projects is what we call respect and credits… nothing more. you can still respect the authors and give credits to them if someone ask… so yes, you can delete everything you need to.

that is the answer to the OP.