YARN-9239. Document docker registry deployment with Ozone CSI driver. Contributed by Eric Yang.

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/markdown/DockerContainers.md

@@ -881,10 +881,6 @@ registry.json
 
 For further details and parameters that could be configured in the S3 storage driver, please refer https://docs.docker.com/registry/storage-drivers/s3/.
 
-### Docker Registry with CSI Driver
-
-CSI driver enables third party storage system to expose as posix mount point in the container.  This allows Docker Trusted Registry to write docker images to an external storage.
-
 Example: MapReduce
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