config/jobs: drop k8s-testimages/cluster-api push job

config/jobs/kubernetes/test-infra/test-infra-trusted.yaml

@@ -310,30 +310,6 @@ postsubmits:
         - --project=k8s-testimages
         - --build-dir=.
         - images/bazel-krte/
-  - name: post-test-infra-push-cluster-api
-    cluster: test-infra-trusted
-    run_if_changed: '^images/cluster-api/'
-    annotations:
-      testgrid-dashboards: "sig-testing-images"
-      testgrid-tab-name: "cluster-api"
-      testgrid-alert-email: kubernetes-sig-testing-alerts@googlegroups.com, k8s-infra-oncall@google.com
-      testgrid-num-failures-to-alert: '1'
-      description: builds and pushes the cluster-api image
-    decorate: true
-    branches:
-    - ^master$
-    max_concurrency: 1
-    spec:
-      serviceAccountName: deployer # TODO(fejta): should be pusher
-      containers:
-      - image: gcr.io/k8s-testimages/gcloud-bazel:v20210128-v0.6-11-gf1c6399
-        command:
-        - images/builder/ci-runner.sh
-        args:
-        - --scratch-bucket=gs://k8s-testimages-scratch
-        - --project=k8s-testimages
-        - --build-dir=.
-        - images/cluster-api/
   - name: post-test-infra-push-gcb-docker-gcloud
     cluster: test-infra-trusted
     run_if_changed: '^images/gcb-docker-gcloud/'