DOCS-10519-checklist-advice (#2687) (#2700)

* DOCS-10519-checklist-advice

* fake commit

* TEST-IGNORE

* DOCS-10519 checklist advice

Author: Dave Cuthbert

source/administration/security-checklist.txt

@@ -6,8 +6,6 @@ Security Checklist
 
 .. |arrow| unicode:: U+27A4
 
-*Last updated: 2021-09-29*
-
 This document provides a list of security measures that you should
 implement to protect your MongoDB installation. The list is not meant
 to be exhaustive.
@@ -176,10 +174,6 @@ Pre-production Checklist/Considerations
   This ensures that all documents stored by the
   :binary:`~bin.mongod` instance are valid :term:`BSON`.
 
-.. seealso::
-
-   :doc:`/core/security-hardening`
-
 |arrow| Request a Security Technical Implementation Guide (where applicable)
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~