Remove deprecation warning from delete documents by batch (#3286)

Route deprecation no longer planned

Author: guimachiavelli

reference/api/documents.mdx

@@ -582,10 +582,6 @@ You can use this `taskUid` to get more details on [the status of the task](/refe
 
 ## Delete documents by batch
 
-<Warning>
-This endpoint will be deprecated in the near future. Consider using POST `/indexes/{index_uid}/documents/delete` instead .
-</Warning>
-
 <RouteHighlighter method="POST" path="/indexes/{index_uid}/documents/delete-batch" />
 
 Delete a set of documents based on an array of document ids.