DOCSP-45819 remove Krb5CCName fields-v8.0-backport (614) (#625)

# Backport

This will backport the following commits from `master` to `v8.0`:
- [DOCSP-45819 remove Krb5CCName fields
(#614)](10gen/docs-ops-manager#614)

<!--- Backport version: 9.6.1 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sorenlouv/backport)

Author: amalhotra-mdb

source/reference/mongodb-agent-settings.txt

@@ -616,32 +616,6 @@ using Kerberos. To configure Kerberos, see
 
    .. include:: /includes/fact-set-krb5ccname.rst
 
-.. setting:: backupAgentKrb5CCName
-
-   *Type* string
-
-   Specifies the ``KRB5CC`` environment variable that the MongoDB
-   Agent sets for the {+bagent+} process. Used only to authenticate the
-   {+bagent+} to your MongoDB deployment when the {+mdbagent+}
-   starts the {+bagent+} function.
-
-   .. code-block:: ini
-
-      backupAgentKrb5CCName=/path/to/credentials_cache_file
-
-.. setting:: monitoringAgentKrb5CCName
-
-   *Type* string
-
-   Specifies the ``KRB5CC`` environment variable that the MongoDB
-   Agent sets for the {+magent+} function. Used only to authenticate
-   {+magent+} to your MongoDB deployment when the MongoDB
-   Agent starts the {+magent+} function.
-
-   .. code-block:: ini
-
-      monitoringAgentKrb5CCName=/path/to/credentials_cache_file
-
 .. _mongodb-agent-monitoring-settings:
 
 {+magent+} Settings