remove crufty(?) log message

This log message seems like debugging cruft, and it's generating a fair number of log entries:

[jwm@holy-slurm01:pts/4 ~> sudo grep -c '^\[2014-06-30T.*checking here' /var/slurmd/log/slurmctld.log  
90714
[jwm@holy-slurm01:pts/4 ~> sudo grep -c '^\[2014-06-30T' /var/slurmd/log/slurmctld.log
444666