Reverted the fix for commit d75c7a93e0212fe8c97cc02db96533d7c5b71c4b
which was a fix for TRQ-1976 where we were trying to alleviate
problems with the server hanging because of live locks. The real
problem for the TRQ-1976 issue is a need to be able to throttle
incoming connections to pbs_server so the change is not needed and
led to a regression reported in TRQ-2063. This change fixes TRQ-2063.