Updated openstack/openstack
Project: openstack/oslo-incubator  7c65b24eba35e79ba050270f4b3ad67ef89a9938

Clean requirements

It seems that we removed a lot of code lately but we forgot to clean the
requirements files accordingly.

Change-Id: Ifa9d1fa0cb5d39c8fc7aad35a757d34fb6108bbe