Remove the incomplete wsgi script placement-api.py
Remove the incomplete wsgi script placement-api.py

This is replaced by the better and more functionally correct
(because, for example, it handles effective logging) wsgi.py at
nova/api/openstack/placement/wsgi.py which can be installed
properly during a pip install with the help of pbr.

Change-Id: I170d07e2235261171c8b9ae3eca721b328ed9a9d
Partially-Implements: blueprint generic-resource-pools

mahak/nova,vmturbo/nova,alaski/nova,phenoxim/nova,gooddata/openstack-nova,mikalstill/nova,gooddata/openstack-nova,Juniper/nova,vmturbo/nova,openstack/nova,hanlind/nova,gooddata/openstack-nova,openstack/nova,mikalstill/nova,rajalokan/nova,Juniper/nova,hanlind/nova,rajalokan/nova,alaski/nova,rahulunair/nova,mikalstill/nova,jianghuaw/nova,mahak/nova,klmitch/nova,rajalokan/nova,jianghuaw/nova,Juniper/nova,vmturbo/nova,sebrandon1/nova,vmturbo/nova,sebrandon1/nova,klmitch/nova,rahulunair/nova,klmitch/nova,rahulunair/nova,mahak/nova,jianghuaw/nova,cloudbase/nova,phenoxim/nova,rajalokan/nova,openstack/nova,jianghuaw/nova,sebrandon1/nova,hanlind/nova,cloudbase/nova,klmitch/nova,Juniper/nova,gooddata/openstack-nova,cloudbase/nova