Revert "Added job id to log err statement in lock_ji_mutex"

This reverts commit 4370d12eaf6f08d26f51004a801ae577740c3f86.

pjob is likely not valid so trying to get a jobid could cause a segfault.
lock_ji_mutex change to print jobid on error may be using
invalid pointer to job. Needs to be reverted.