removed useless CD cleanup config

.github/workflows/cleanup.yml

@@ -1,33 +0,0 @@
-name: Cleanup
-
-on:
-  pull_request:
-    types: [ closed ]
-
-jobs:
-  cleanup:
-    name: Cleanup
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v3
-
-      - name: Set KUBECONFIG
-        run: |
-          mkdir ~/.kube
-          echo ${{ secrets.KUBECONFIG }} | base64 -d > ~/.kube/config
-          kubectl config view
-
-      - name: Uninstall helm release
-        id: uninstall_helm_release
-        run: |
-          export RELEASE_NAME=pr-$(jq --raw-output .pull_request.number $GITHUB_EVENT_PATH)
-          echo "Uninstalling release ${RELEASE_NAME}"
-          if ! helm uninstall ${RELEASE_NAME} --kube-context nonprod --wait ; then
-            echo "HELM Uninstall has failed !"
-            echo "Please ask the SRE team to manually clean remaining objects"
-            exit 1
-          fi
-          echo "HELM uninstall successfull"
-          echo "Cleaning remaining PVC..."
-          kubectl delete pvc -l app.kubernetes.io/instance=$RELEASE_NAME