These settings are managed by ECK and you cannot currently disable security and you cannot disable TLS on the transport layer. Please see Settings managed by ECK | Elastic Cloud on Kubernetes [2.10] | Elastic for a list of settings managed by ECK that we don't support to be set by users.
If you want to disable security in order to allow access without authentication to your clusters, please consider enabling anonymous access instead: Enabling anonymous access | Elasticsearch Guide [7.6] | Elastic
You can however disable TLS on the HTTP layer if desired. Instructions are here: Access Elastic Stack services | Elastic Cloud on Kubernetes [2.10] | Elastic