LU-19098 hsm: don't print progname twice with lhsmtool

LU-19098 hsm: don't print progname twice with lhsmtool

Since Lustre 2.11, log message from llapi_error() prefixes
the message with the current program short name. There is no
more a need for lhsmtool_posix log fonctions (CT_xxxx) to also
do the same.

Remove the duplicate prog name and cmd_name.

Test-Parameters: trivial testlist=sanity-hsm
Signed-off-by: Aurelien Degremont <adegremont@nvidia.com>
Change-Id: I4ebdf01cd00d1544678cbad066e2c3a79ecfda38
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/59680
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Arshad Hussain <arshad.hussain@aeoncomputing.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>