[fix] Remove deletion of LinodeVPC and LinodeFirewall in e2etest (#749)

We no longer need to delete them explicitly since we have now implemented ownerRefs. Just deleting Cluster will cascade the deletion to all the other resources like LinodeVPC, LinodeFirewall, LinodePlacementgroyp, etc.

Author: komer3

e2e/capl-cluster-flavors/k3s-capl-cluster/chainsaw-test.yaml

@@ -130,21 +130,6 @@ spec:
               apiVersion: cluster.x-k8s.io/v1beta1
               kind: Cluster
               name: ($cluster)
-        - delete:
-            ref:
-              apiVersion: infrastructure.cluster.x-k8s.io/v1alpha2
-              kind: LinodeVPC
-              name: ($cluster)
-        - delete:
-            ref:
-              apiVersion: infrastructure.cluster.x-k8s.io/v1alpha2
-              kind: LinodeFirewall
-              name: ($cluster)
-        - delete:
-            ref:
-              apiVersion: infrastructure.cluster.x-k8s.io/v1alpha2
-              kind: LinodeFirewall
-              name: ($cluster)-nb
         - error:
             file: check-child-cluster-vpc-and-firewall-deleted.yaml
     - name: Check if the linodes are deleted

e2e/capl-cluster-flavors/kubeadm-capl-cluster/chainsaw-test.yaml

@@ -147,9 +147,6 @@ spec:
                 exit 0
               fi
               kubectl delete cluster $CLUSTER -n $NAMESPACE --timeout=120s || { echo "deletion failed!"; exit 1; }
-              kubectl delete linodevpc $CLUSTER -n $NAMESPACE --timeout=120s || { echo "deletion failed!"; exit 1; }
-              kubectl delete linodefirewall $CLUSTER -n $NAMESPACE --timeout=120s || { echo "deletion failed!"; exit 1; }
-              kubectl delete linodefirewall $CLUSTER-nb -n $NAMESPACE --timeout=120s || { echo "deletion failed!"; exit 1; }
             check:
               ($error == null): true
               (contains($stdout, 'deletion failed')): false

e2e/capl-cluster-flavors/rke2-capl-cluster/chainsaw-test.yaml

@@ -129,21 +129,6 @@ spec:
               apiVersion: cluster.x-k8s.io/v1beta1
               kind: Cluster
               name: ($cluster)
-        - delete:
-            ref:
-              apiVersion: infrastructure.cluster.x-k8s.io/v1alpha2
-              kind: LinodeVPC
-              name: ($cluster)
-        - delete:
-            ref:
-              apiVersion: infrastructure.cluster.x-k8s.io/v1alpha2
-              kind: LinodeFirewall
-              name: ($cluster)
-        - delete:
-            ref:
-              apiVersion: infrastructure.cluster.x-k8s.io/v1alpha2
-              kind: LinodeFirewall
-              name: ($cluster)-nb
         - error:
             file: check-child-cluster-vpc-and-firewall-deleted.yaml
     - name: Check if the linodes are deleted