Are there any World of Warcraft people on here who might be able to answer a tech question for me?

I am trying to clear up memory space on my computer, because it seems a little sluggish. When I open my control panel and go to “Add/Remove Programs”, WoW is listed in the programs twice.

Does that mean it’s installed twice? Is it supposed to be installed twice? Is it safe to remove one of them? They both take up 19,807MB of memory, and I think it would help to ditch one of them if I can. If it’s safe to remove one, how do I know which one to remove if I have addons in my WoW folder?

Maybe no one on here knows about this, but I figured it was worth a shot.