Remove unused modules from openstack-common.conf

openstack-common.conf under "The list of modules to copy from
oslo-incubator" section contains some modules that are not used by
Ironic code, only by openstack/common modules. Such modules should be
removed from openstack-common.conf, as oslo-incubator/update.py can
handle internal dependencies.

Change-Id: Ifb3cc67efba10dd39e86c1d3a0cc769753de2122
Closes-bug: #1367291
Merge "Remove unused modules from openstack-common.conf"