Remove kube-deploy tests for the cluster api code.

[roberthbailey]

Basically undoing #6761 and #6792. This will unblock merging kubernetes-retired/kube-deploy#704.

[krousey]

/lgtm

[krzyzacy]

/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: krousey, krzyzacy, roberthbailey

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[k8s-ci-robot]

@roberthbailey: Updated the following 2 configmaps:

• config configmap using the following files:
  • key config.yaml using file prow/config.yaml
• plugins configmap using the following files:
  • key plugins.yaml using file prow/plugins.yaml

In response to this:

Basically undoing #6761 and #6792. This will unblock merging kubernetes-retired/kube-deploy#704.

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