Remove explicit install of setuptools
Remove explicit install of setuptools

This is for an old pip workaround which may no longer be valid.

Change-Id: I0b5e392d58828929f3d18569e77337fb79d93c0f

masayukig/tempest,openstack/tempest,vedujoshi/tempest,vedujoshi/tempest,Juniper/tempest,openstack/tempest,Juniper/tempest,cisco-openstack/tempest,cisco-openstack/tempest,masayukig/tempest