Revert "pr-crio-cgrpv2-imagefsfs-e2e-kubetest2: use n1-standard-4 machine"

This reverts commit ddaf26c.

Author: bart0sh

jobs/e2e_node/crio/latest/image-config-cgroupv2-imagefs.yaml

@@ -2,5 +2,5 @@ images:
   fedora:
     image_family: fedora-coreos-stable
     project: fedora-coreos-cloud
-    machine: n1-standard-4
+    machine: n1-standard-2
     metadata: "user-data</home/prow/go/src/k8s.io/test-infra/jobs/e2e_node/crio/crio_cgroupv2_imagefs.ign"