Resolve CLI elixirc warnings (backport #10459)

[mergify]

This is an automatic backport of pull request #10459 done by Mergify.
Cherry-pick of c285651 has failed:

On branch mergify/bp/v3.12.x/pr-10459
Your branch is ahead of 'origin/v3.12.x' by 1 commit.
  (use "git push" to publish your local commits)

You are currently cherry-picking commit c285651636.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   deps/rabbitmq_cli/lib/rabbitmq/cli/core/command_modules.ex
	modified:   deps/rabbitmq_cli/lib/rabbitmq/cli/ctl/commands/add_user_command.ex
	modified:   deps/rabbitmq_cli/lib/rabbitmq/cli/ctl/commands/update_cluster_nodes_command.ex
	modified:   deps/rabbitmq_cli/lib/rabbitmq/cli/diagnostics/commands/list_policies_that_match.ex
	modified:   deps/rabbitmq_cli/lib/rabbitmq/cli/diagnostics/commands/remote_shell_command.ex

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	deleted by us:   deps/rabbitmq_cli/lib/rabbitmq/cli/ctl/commands/force_standalone_khepri_boot.ex
	both modified:   deps/rabbitmq_cli/lib/rabbitmq/cli/ctl/commands/forget_cluster_node_command.ex
	both modified:   deps/rabbitmq_cli/lib/rabbitmq/cli/ctl/commands/join_cluster_command.ex
	both modified:   deps/rabbitmq_cli/lib/rabbitmq/cli/ctl/commands/rename_cluster_node_command.ex
	deleted by us:   deps/rabbitmq_cli/lib/rabbitmq/cli/diagnostics/commands/check_if_any_deprecated_features_are_used_command.ex
	deleted by us:   deps/rabbitmq_cli/lib/rabbitmq/cli/diagnostics/commands/metadata_store_status_command.ex
	deleted by us:   deps/rabbitmq_cli/lib/rabbitmq/cli/streams/commands/coordinator_status_command.ex

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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