You're in the right place, then ...lol.
Top right of those pics, you should see SHOW ALL or something like that. As you scroll over the pics, it should tell you the players name.
Hold down CRTL and click on 5 or 6 of those pics, and they should each open a new tab ( I know it works that way with IE & Firefox, anyhow), which will be that player's profile page.
From there, you just click on each new tab, let it open, and then click on Remove Friend on their profile.. then just close that tab.
It's still a tedious process, but much better than going from your profile to theirs and back to yours, etc, etc, etc. a few hundred times.