I believe this link in the body of the description was added in 2.4, actually! See:
At this time, there is unfortunately not a UI setting that will hide this field. I suspect you could suppress it in a custom theme if needed?
I respect your preferences, but I am also curious about why you want to hide the field, so your feedback might perhaps help us refine it in the future. It's intended to help users notice that there is a finding aid available - we've noticed that some users don't always realize there is related content presented in the context menu. Can you tell us more about what you don't like, or what changes would make you appreciate this feature more?
Cheers,