ceilometerclient removed from requirements.txt
ceilometerclient removed from requirements.txt

Change-Id: Id7c64fc3daf770ad3af238e83c72cf7f4ee607ed
Closes-Bug: #1644213

noironetworks/horizon,NeCTAR-RC/horizon,BiznetGIO/horizon,ChameleonCloud/horizon,yeming233/horizon,NeCTAR-RC/horizon,ChameleonCloud/horizon,BiznetGIO/horizon,NeCTAR-RC/horizon,BiznetGIO/horizon,NeCTAR-RC/horizon,yeming233/horizon,noironetworks/horizon,openstack/horizon,openstack/horizon,yeming233/horizon,noironetworks/horizon,ChameleonCloud/horizon,openstack/horizon,noironetworks/horizon,BiznetGIO/horizon,ChameleonCloud/horizon,yeming233/horizon,openstack/horizon