LU-14409 ldiskfs: remove stray tracing code

LU-14409 ldiskfs: remove stray tracing code

These lines should never have landed :-(

Test-Parameters: trivial
Signed-off-by: Mr NeilBrown <neilb@suse.de>
Fixes: 3a83078628a4 ("LU-14409 ldiskfs: Add support for SUSE 5.3.18-24.46.1")
Change-Id: I7720158605cce81721738a5f6640ccb4e0440b09
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/49383
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Shaun Tancheff <shaun.tancheff@hpe.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Tested-by: jenkins <devops@whamcloud.com>