removed v0.8.3 of rook (#314)

Rook v0.8.3 was found to be not working and is too old to continue
supporting.

Signed-off-by: Craig Sterrett <craig.Sterrett@intel.com>

clr-k8s-examples/7-rook/overlays/v0.8.3/kustomization.yaml

@@ -1,7 +0,0 @@
-resources:
-  - rook/cluster/examples/kubernetes/ceph/operator.yaml
-  - rook/cluster/examples/kubernetes/ceph/cluster.yaml
-  - rook/cluster/examples/kubernetes/ceph/storageclass.yaml
-
-patchesStrategicMerge:
-  - patch_operator.yaml

clr-k8s-examples/7-rook/overlays/v0.8.3/patch_operator.yaml

@@ -1,13 +0,0 @@
-# operator
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: rook-ceph-operator
-spec:
-  template:
-    spec:
-      containers:
-        - name: rook-ceph-operator
-          env:
-          - name: FLEXVOLUME_DIR_PATH
-            value: "/var/lib/kubelet/volume-plugins"