chore: cleanup orphaned content files (#9974)

Co-authored-by: jcanalesluna <56018501+jcanalesluna@users.noreply.github.com>

src/data/roadmaps/elasticsearch/content/bulk-index@s1Finic6tTeSbgXt1nz30.md

@@ -1,10 +0,0 @@
-# Reindex API
-
-The Reindex API in Elasticsearch allows you to copy documents from one index to another. This is useful for a variety of tasks, including changing the mapping of an index, upgrading to a new Elasticsearch version, or splitting a large index into smaller ones. It essentially reads documents from a source index and writes them into a destination index, optionally applying transformations along the way.
-
-Visit the following resources to learn more:
-
-- [@official@Reindex documents](https://www.elastic.co/docs/api/doc/elasticsearch/operation/operation-reindex)
-- [@article@Reindex indices examples](https://www.elastic.co/docs/reference/elasticsearch/rest-apis/reindex-indices)
-- [@article@Elasticsearch Reindexing: When to Reindex, Best Practices and Alternatives](https://medium.com/@jmills2010/elasticsearch-reindexing-when-to-reindex-best-practices-and-alternatives-7ebfa11667a0)
-- [@article@Elasticsearch Reindex API: A Guide to Data Management](https://last9.io/blog/elasticsearch-reindex-api/)