(DOCSP-46034) Fixes build error. (#620)

- [DOCSP-46034](https://jira.mongodb.org/browse/DOCSP-46034)

Author: erabil-mdb

source/core/backup-preparations.txt

@@ -181,10 +181,6 @@ your database increases beyond 2 TB of uncompressed data:
 - Shard the database
 - Keep each shard to 2 TB or less of uncompressed data
 
-.. cond:: onprem
-
-   .. include:: /includes/backup/fact-backup-with-blockstores.rst
-
 These size recommendations are a best practice. They are not a
 limitation of the MongoDB database or |mms|.