cleanup: fix log level
cleanup: fix log level

This log line is seen frequently in the logs and its better to be at
Warning loglevel rather than Error based on its severity

E1109 08:30:45.612395   38328 util.go:247] kernel 4.19.202 does not support required features

Signed-off-by: Prasanna Kumar Kalever <a78d8f98557446023f5b3ba9944d7be259a978a3@redhat.com>

ceph/ceph-csi,ceph/ceph-csi,ceph/ceph-csi,ceph/ceph-csi