This KB will help you to remove the installed resources (source-controller and kustomize-controller) from the TMC managed cluster.
VMware Tanzu Mission Control
Tanzu Mission Control
When you disable continuous delivery for a cluster or cluster group, Tanzu Mission Control removes the continuous delivery extension and CRD, and the GitRepository and Kustomization intents. However, the package install resources in the tanzu-fluxcd-packageinstalls namespace are not removed from the clusters.
tanzu mission-control tanzupackage install delete kustomize-controller --cluster-name <cluster-name> -m <management-cluster-name> -p <provisioner-name> --namespace-name tanzu-fluxcd-packageinstalls
tanzu mission-control tanzupackage install list --cluster-name <cluster-name> -m <management-cluster-name> -p <provisioner-name> --namespace-name tanzu-fluxcd-packageinstalls
The tmc command-line interface will be removed and no longer supported after May 2024. You must complete your transition to the tanzu CLI before May 31, 2024.
The Tanzu Mission Control tmc CLI has been in deprecation since May 2023, after the introduction of the tanzu CLI.
For information about tanzu CLI commands, see the VMware Tanzu CLI Reference - Tanzu Mission Control Plugins.
Please refer the docs for more details to Disable continuous delivery.