Remove cluster labeling recommendations for management cluster

[calebwashburn]

Describe the bug
Product recommendation is not to use AVI_LABELS with 1.5.x to control AKO. https://docs.vmware.com/en/VMware-Tanzu-Kubernetes-Grid/1.5/vmware-tanzu-kubernetes-grid-15/GUID-release-notes.html#vsphere-18

To Reproduce
Follow deployment guide https://docs.vmware.com/en/VMware-Tanzu-for-Kubernetes-Operations/1.5/tko-reference-architecture/GUID-deployment-guides-tko-on-vsphere-nsxt.html#deploy-tanzu-kubernetes-grid-management-cluster-22

Expected behavior
Deploy management cluster without label type:management and then follow directions for workload clusters as AKO will be installed properly in the workload cluster after AKOOperator picks up the changes.

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Additional context
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