Merge pull request #3085 from tianon/fix-cgroup-dep

Revert "Add cgroup-bin dependency to our Ubuntu package"

hack/make/ubuntu

@@ -96,7 +96,6 @@ EOF
 		    --depends lxc \
 		    --depends aufs-tools \
 		    --depends iptables \
-		    --depends cgroup-bin \
 		    --description "$PACKAGE_DESCRIPTION" \
 		    --maintainer "$PACKAGE_MAINTAINER" \
 		    --conflicts lxc-docker-virtual-package \