fix(examples): remove legacy FDs from nutanix clusterclass

These were causing failures when creating clusters with new
failure domains as only one of the two can be specified.

Author: thunderboltsid

charts/cluster-api-runtime-extensions-nutanix/defaultclusterclasses/nutanix-cluster-class.yaml

@@ -285,7 +285,6 @@ spec:
       controlPlaneEndpoint:
         host: PLACEHOLDER
         port: 6443
-      failureDomains: []
       prismCentral:
         address: PLACEHOLDER
         credentialRef:

hack/examples/bases/nutanix/clusterclass/kustomization.yaml.tmpl

@@ -99,3 +99,10 @@ ${KUBE_VIP_CONTENT}
           name: PLACEHOLDER
           kind: Secret
           namespace: default
+
+# Remove empty failureDomains array from NutanixClusterTemplate
+- target:
+    kind: NutanixClusterTemplate
+  patch: |-
+    - op: "remove"
+      path: "/spec/template/spec/failureDomains"