LU-13485 libcfs: Remove unused iter_type check

LU-13485 libcfs: Remove unused iter_type check

The iter_type member check is not used, remove it.

Test-Parameters: trivial
Signed-off-by: Shaun Tancheff <shaun.tancheff@hpe.com>
Change-Id: I48d536a27738e73314feb88317d41d8479c72528
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/48091
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Jian Yu <yujian@whamcloud.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Oleg Drokin <green@whamcloud.com>