Remove custom roles versioning from the REST custom roles article (#33956)

Co-authored-by: Rachael Sewell <[email protected]>

Author: Sarah Edwards

content/rest/enterprise-admin/admin-stats.md

@@ -5,7 +5,6 @@ versions:
   ghes: '*'
   ghae: '*'
   ghec: '*'
-  fpt: '*'
 topics:
   - API
 miniTocMaxHeadingLevel: 3

content/rest/enterprise-admin/billing.md

@@ -2,7 +2,6 @@
 title: Billing
 intro: 'Use the REST API to retrieve the GitHub Advanced Security active committers for an enterprise per repository.'
 versions:
-  fpt: '*'
   ghes: '>=3.4'
   ghec: '*'
 topics:

content/rest/orgs/custom-roles.md

@@ -2,7 +2,6 @@
 title: Custom Repository Roles
 intro: 'Use the REST API to interact with custom repository roles.'
 versions:
-  fpt: '*'
   ghes: '>=3.4'
   ghec: '*'
 topics: