volser: remove commented code

Apparently this predates AFS 3.0 so it should be safe to remove.

Change-Id: Ifec145c71da4668066bf428fb594943dfce20e88
Reviewed-on: http://gerrit.openafs.org/10935
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>