Cannot disable extension from running on VMSS agent

[ggeorge-pros]

My team provides VMSS and AKS based Azure DevOps agents, both of which are self-hosted. In the AKS case, we have an entrypoint script that manages the configuration and runtime of the agent process. Because we want to align VMSS agents with AKS agents, we added a custom script extension for the VMSS which borrows nearly all the same code from AKS agents. As a result, we have no use for the extension and if there's no way to disable it when creating the agent pool, I would like to do so from the extension.