Files without nav entries

[btat]

The following files exist in the */pages directory, but aren't present in the corresponding nav.adoc file.

Please review the list and determine if:

• The nav entry is missing and should be added.
• The file is no longer needed and should removed.
• Something else.

versions/latest/modules/zh/pages/release-notes/v1.31.X.adoc
versions/latest/modules/zh/pages/reference/subcommands.adoc
versions/latest/modules/zh/pages/install/linux_uninstall.adoc
versions/latest/modules/zh/pages/install/windows_uninstall.adoc