Removing Subpage Links

Okay, So I am using the default Netfirms theme on my WordPress page but I am having a problem with subpages. It automatically adds a subpage link for each page i create. I dont want it to. How do I stop it? I have been looking through this code for hours and cant figure it out. I would think it would be simple.

If you go to my site:
https://www.precision-concepts.com

you can see that I have a MEMBERS PAGE.
Well there are over 20 members and having 20 sublinks under the members section would take up TOO MUCH SPACE. How do i remove these links?

Thanks,
Matt