When you create child pages in Confluence, a section is added to the bottom of the parent page listing all of the child pages:

To hide that section, you can use jQuery:

• Log in to Confluence as an administrator.
•  Select Browse -> Confluence Admin -> Look and Feel -> Custom HTML.

•  Insert the following code in the “At end of HEAD” section:

  <script>
  AJS.toInit(function() {
   AJS.$("#children-section").css("display","none");
   });
  </script>
  

• Save your changes. Your page will now look like the following: