Partial revert of "Fix dagman tests that have race conditions #3359"
Partial revert of "Fix dagman tests that have race conditions #3359"

Revert the part where a sleep was added to job_dagman_halt-A.  I had no
effect.

zhangzhehust/htcondor,zhangzhehust/htcondor,neurodebian/htcondor,htcondor/htcondor,djw8605/htcondor,djw8605/htcondor,htcondor/htcondor,neurodebian/htcondor,zhangzhehust/htcondor,neurodebian/htcondor,djw8605/htcondor,zhangzhehust/htcondor,zhangzhehust/htcondor,neurodebian/htcondor,zhangzhehust/htcondor,htcondor/htcondor,zhangzhehust/htcondor,neurodebian/htcondor,neurodebian/htcondor,htcondor/htcondor,htcondor/htcondor,djw8605/htcondor,djw8605/htcondor,neurodebian/htcondor,djw8605/htcondor,htcondor/htcondor,djw8605/htcondor,htcondor/htcondor,djw8605/htcondor,neurodebian/htcondor,zhangzhehust/htcondor,neurodebian/htcondor,zhangzhehust/htcondor,djw8605/htcondor,htcondor/htcondor