Revert "docs: sysctl/kernel: document ngroups_max"

This reverts commit 2f4c33063ad713e3a5b63002cf8362846e78bd71.

The changes here were fine, but there's a non-documentation change to
sysctl.c that makes messes elsewhere; those changes should have been done
independently.

Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2 files changed