Remote XDCR cluster still listed after removal

After deleting a remote XDCR cluster definition (either via the GUI or CLI) it is gone in the GUI, but still listed via the CLI.

Steps to reproduce:
0. Clean install of couchbase-server-3.0.3-1716.x86_64

1. cluster init

2. Define remote XDCR cluster

1. couchbase-cli xdcr-setup -u Administrator -p admin123 -c 127.0.0.1 --create \
   --xdcr-cluster-name=OtherCluster --xdcr-hostname=test1d.lab:8091 \
   --xdcr-username=Administrator --xdcr-password=admin123
   SUCCESS: init/edit OtherCluster

1. couchbase-cli xdcr-setup -u Administrator -p admin123 -c 127.0.0.1 --list
   cluster name: OtherCluster
   uuid: 4a4d2ae53f323b727ac11aa7449fc768
   host name: test1d.lab:8091
   user name: Administrator
   uri: /pools/default/remoteClusters/OtherCluster

3. Remove remote XDCR cluster

1. couchbase-cli xdcr-setup -u Administrator -p admin123 -c 127.0.0.1 --delete \
   --xdcr-cluster-name="OtherCluster"
   SUCCESS: delete OtherCluster

Still visible via CLI, gone in GUI:

1. couchbase-cli xdcr-setup -u Administrator -p admin123 -c 127.0.0.1 --list
   cluster name: OtherCluster
   uuid: 4a4d2ae53f323b727ac11aa7449fc768
   host name: test1d.lab:8091
   user name: Administrator
   uri: /pools/default/remoteClusters/OtherCluster

4. It is actually removed, as deleting again fails:

1. couchbase-cli xdcr-setup -u Administrator -p admin123 -c 127.0.0.1 --delete \
   --xdcr-cluster-name="OtherCluster"
   ERROR: unable to delete xdcr remote site 127.0.0.1 (404) Object Not Found
   unknown remote cluster