Revert "Update the done_job_count counter after each job."
Revert "Update the done_job_count counter after each job."

Workers were in fact designed not to update the analysis_stats table too
frequently. The "done_job_count" counter is updated every two minutes.

This reverts commit 258cbf593bc1c6112707e11c5382ae8d17873385.

Ensembl/ensembl-hive,Ensembl/ensembl-hive,Ensembl/ensembl-hive,Ensembl/ensembl-hive