hadoop: remove unused variable
hadoop: remove unused variable

Remove CephFileSystem.debug as log4j is now
used for debug level control.

Signed-off-by: Noah Watkins <86ecd7d1c53cf33a85014f7cab78876cb4491020@gmail.com>

ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph