Drop the capg-build-image-nightly job

config/jobs/image-pushing/k8s-staging-cluster-api.yaml

@@ -258,60 +258,3 @@ periodics:
     testgrid-dashboards: sig-cluster-lifecycle-image-pushes
     testgrid-tab-name: cluster-api-provider-openstack-push-images-nightly
     testgrid-alert-email: sig-cluster-lifecycle-cluster-api-alerts@kubernetes.io
-
-##
-## This Job is a temporary solution that builds the machine images using image-builder repository
-## and packer. this is not the image for CAPG manager.
-## This should be replaced in the future with the work from https://github.com/kubernetes-sigs/image-builder/pull/445
-##
-- name: cluster-api-provider-gcp-build-image-nightly
-  cluster: k8s-infra-prow-build-trusted
-  labels:
-    preset-dind-enabled: "true"
-    preset-kind-volume-mounts: "true"
-    preset-service-account: "true"
-  decorate: true
-  decoration_config:
-    timeout: 3h
-  # TODO(dims): switch to cron after we get this job working.
-  interval: 2h
-  extra_refs:
-    - org: kubernetes-sigs
-      repo: cluster-api-provider-gcp
-      base_ref: master
-      path_alias: "sigs.k8s.io/cluster-api-provider-gcp"
-    - org: kubernetes-sigs
-      repo: image-builder
-      base_ref: master
-      path_alias: "sigs.k8s.io/image-builder"
-  spec:
-    serviceAccountName: gcb-builder
-    containers:
-      - image: gcr.io/k8s-testimages/kubekins-e2e:v20210426-51fd28e-master
-        env:
-          # TODO(dims): reuse this project for now to test this job.
-          # need to create a separate project.
-          - name: "GCP_PROJECT"
-            value: "k8s-staging-cloud-provider-gcp"
-          - name: "SKIP_CLEANUP"
-            value: "true"
-        command:
-          - "runner.sh"
-          - "scripts/ci-e2e.sh"
-          - "--verbose"
-          - "--build-image-only"
-        # we need privileged mode in order to do docker in docker
-        securityContext:
-          privileged: true
-        resources:
-          requests:
-            # these are both a bit below peak usage during build
-            # this is mostly for building kubernetes
-            memory: "9000Mi"
-            # during the tests more like 3-20m is used
-            cpu: 2000m
-  annotations:
-    testgrid-dashboards: sig-cluster-lifecycle-image-pushes
-    testgrid-tab-name: capg-build-image-nightly
-    testgrid-alert-email: sig-cluster-lifecycle-cluster-api-alerts@kubernetes.io
-    testgrid-num-failures-to-alert: "2"