remove no longer needed ui props

Author: sarahs

data/ui.yml

@@ -64,14 +64,6 @@ contribution_cta:
   button: Make a contribution
   or: Or,
   to_guidelines: learn how to contribute.
-enterprise_releases_list:
-  title: Enterprise Server Releases
-  currently_supported: Currently supported
-  currently_supported_message: See <a href="https://github.com/enterprise">GitHub Enterprise</a> for information about the latest release.
-  deprecated: Deprecated
-  deprecated_message: 'These docs remain available but are no longer maintained:'
-  deprecated_developer: Deprecated on developer.github.com
-  deprecated_developer_message: 'These docs remain available on the legacy <a href="https://developer.github.com">developer site</a> but are no longer maintained:'
 products:
   graphql:
     reference: