DOCSP-19009 remove references to mongosh --gssapiHostName from the manual

Author: jmd-mongo

source/includes/steps-control-access-to-mongodb-windows-with-kerberos-authentication.yaml

@@ -111,12 +111,9 @@ action:
        Kerberos name, ensure that you specify the fully qualified
        domain name (FQDN) for the ``--host``
        option, rather than an IP address or unqualified hostname.
-    
-       If you are connecting to a system whose hostname does not
-       match the Kerberos name, use :option:`--gssapiHostName <mongosh --gssapiHostName>`
-       to specify the Kerberos FQDN that it responds to.
   - pre: |
-       Alternatively, you can first connect :binary:`mongo.exe
+       If you are connecting to a system whose hostname does not
+       match the Kerberos name, first connect :binary:`mongo.exe
        <bin.mongo>` to the :binary:`~bin.mongod.exe`, and then from the
        :binary:`mongo.exe <bin.mongo>` shell, use the
        :method:`db.auth()` method to authenticate in the ``$external``

source/includes/steps-control-access-to-mongodb-with-kerberos-authentication.yaml

@@ -118,15 +118,12 @@ action:
        Kerberos name, ensure that you specify the fully qualified
        domain name (FQDN) for the ``--host``
        option, rather than an IP address or unqualified hostname.
-
-       If you are connecting to a system whose hostname does not
-       match the Kerberos name, use :option:`--gssapiHostName <mongosh --gssapiHostName>`
-       to specify the Kerberos FQDN that it responds to.
   - pre: |
-       Alternatively, you can first connect :binary:`~bin.mongosh` to the
-       :binary:`~bin.mongod`, and then from :binary:`~bin.mongosh`, use
-       the :method:`db.auth()` method to authenticate in the
-       ``$external`` database.
+       If you are connecting to a system whose hostname does not
+       match the Kerberos name, first connect :binary:`~bin.mongosh` 
+       to the :binary:`~bin.mongod`, and then from 
+       :binary:`~bin.mongosh`, use the :method:`db.auth()` method to 
+       authenticate in the ``$external`` database.
     language: javascript
     code: |
        use $external

source/reference/configuration-options.txt

@@ -2869,11 +2869,6 @@ Key Management Configuration Options
    and Kerberos authentication. The SASL hostname overrides the hostname
    only for the configuration of SASL and Kerberos.
 
-   For :binary:`~bin.mongosh` and other MongoDB tools to connect to
-   the new :setting:`~security.sasl.hostName`, see the
-   ``gssapiHostName`` option in :binary:`~bin.mongosh` and other
-   tools.
-   
 
 
 .. setting:: security.sasl.serviceName