Revert faulty etcd AMI on dev.

Signed-off-by: Rodrigo Reis <[email protected]>

Author: gargravarr

cluster/config-defaults.yaml

@@ -642,11 +642,7 @@ etcd_instance_type: "t3.medium"
 
 etcd_scalyr_key: ""
 
-{{if eq .Cluster.Channel "dev"}}
-etcd_ami: {{ amiID "zalando-ubuntu-etcd-production-v3.5.9-amd64-main-27" "861068367966"}}
-{{else}}
 etcd_ami: {{ amiID "zalando-ubuntu-etcd-production-v3.5.9-amd64-main-24" "861068367966"}}
-{{end}}
 
 cluster_dns: "coredns"
 coredns_log_svc_names: "true"