I hadn't been using XE7 since upgrading to XE8, but I still had it installed. I opened XE7 and got 3 or 4 messages related to missing CodeSiteExpressPkg_Design210.bpl. Indeed it is not on my hard drive, but I may have uninstalled this myself - I'm not sure.
Your messages are all related to FastReports which I don't use. If you don't use FastReports in your projects, you can probably answer No and continue working. If you do use FastReports, I think you'll need to recover these libraries. I would backup my project before opening it and answering No. I think this modifies the project, so be careful.
I guess your main concern is whether installing XE8 Update 1 deleted some third-party libraries used by XE7. I can't prove that in my case. If you prove it in your case, I would contact support. These products are supposed to work when installed side by side.