[DeploymentManager] BREAKING CHANGE: az deploymentmanager: Remove command module since it is no longer maintained by service

[deveshguha]

Related command

az deploymentmanager

Description

The deploymentmanager service is being deprecated and public docs are already removed. This PR is to remove this module from being published.

Testing Guide

History Notes

[Component Name 1] BREAKING CHANGE: az command a: Make some customer-facing breaking change
[Component Name 2] az command b: Add some customer-facing feature

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[yonzhan]

DeploymentManager

[zhoxing-ms]

@deveshguha Please note that removing a command module will cause a breaking change for user's scripts. We recommend removing the module in our unified breaking change sprint (the next breaking change sprint is Build Event) to reduce the impact of breaking change on users~
For more details about breaking change process, please refer to document breaking_changes

[deveshguha]

There are no active users for this module from our telemetry for several months now. The usage documentation/tutorials/guidelines have been removed from Azure docs in the summer of 2022. Given there are no active users that could break, we may consider removing the module immediately.

Having the module available requires us to maintain the compute and associated resources in Azure which are unnecessary, and we would like to free up these unused resources to go back into the Azure fleet available for customers. These resources are being auto cleaned up frequently to reclaim the compute for Azure customers that is adding to operations cost for us to redeploy.
We were asked to reduce COGS and maintaining this module which has no users adds significantly to COGS while having no benefit to Azure customers.
Given these. could we consider removing this module immediately?