The disable_worker_services file was originally created
to prevent the (bare metal) nova-compute services from
running on a newly upgraded controller in an AIO-DX
configuration. This situation no longer exists because
the bare metal nova-compute services do not exist after
transiting to containers. this flag is no longer needed.
Removing all references to the disable_worker_services file.
Change-Id: I4f11674956f9aae1e4e805db2eb0696c3023e71e
Closes-Bug: #1838432
Signed-off-by: marvin <weifei.yu@intel.com>