I just want to delete a PowerPoint link embedded in a PDF

I have been repurposing a PDF made public for sharing as a resource for organizations to use as a "safe return to work" manual during COVID, using Acrobat Pro DC. I haven't run into many problems trying to alter or reverse-engineer most of the original content and format, but some of the original interactive elements are a presenting a challenge to change and/or delete.

One in particular is a simple little link to a PowerPoint slide show, which the original authors plunked right down in the exact center of the page, and which I simply want to delete. I have scoured through all toolbars and dropdowns, read and re-read the appropriate section on Acrobat Help, and even considered hiring an exorcist....all to no avail. I just know that there is probably some stuip-simple way to do this, but everything I have tried has no effect. It's as though this link is shielded/protected from deletion or alteration somehow. I can see it, and when I am not in Edit PDF mode, it is clickable and takes me to the PowerPoint, but otherwise, in an editing sense, it's like it's invisible or doesn't exist. It shows up in the Attachments panel, but I can't "touch" it there either.

Thoughts on how to easily remove this? Aside from just deleting the whole page and starting over? Or better yet, how I can "see" any and all elements like this throughout the PDF so I can "search & destroy"?

--Jeremy Smith