Remove all references to cluster-api-bootstrap-provider-kubeadm

[vincepri]

This repository has been inactive for a long time, and it's due for
archival.

Signed-off-by: Vince Prignano [email protected]

[neolit123]

/lgtm
/assign @spiffxp

[spiffxp]

/approve
/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: spiffxp, vincepri

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Needs approval from an approver in each of these files:

• config/OWNERS [spiffxp]
• config/jobs/image-pushing/OWNERS [spiffxp]

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[k8s-ci-robot]

@vincepri: Updated the following 2 configmaps:

• plugins configmap in namespace default at cluster test-infra-trusted using the following files:
  • key plugins.yaml using file config/prow/plugins.yaml
• job-config configmap in namespace default at cluster test-infra-trusted using the following files:
  • key k8s-staging-cluster-api.yaml using file config/jobs/image-pushing/k8s-staging-cluster-api.yaml
  • key cluster-api-bootstrap-provider-kubeadm-presubmits.yaml using file ``

In response to this:

This repository has been inactive for a long time, and it's due for
archival.

Signed-off-by: Vince Prignano [email protected]

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