chore(provisioning): remove dead LiteLLM decommission code

LiteLLM was a legacy inference proxy that was removed from the stack
months ago. The SSH-based decommission helper and its script generator
were kept as cleanup guardrails, but they add unnecessary round-trips
and YAGNI surface.

Remove:
- ProvisioningScripts#litellm_decommission_script
- RemoteProvisioner#decommission_litellm
- Call sites in ProvisioningOrchestrator#run and ModelSwitcher#switch

No remaining references in the codebase. Legacy Hyperstack cloud firewall
rule cleanup (port 4000) intentionally remains in ProvisioningOrchestrator#legacy_litellm_rules.

1 files changed, 0 insertions, 21 deletions

diff --git a/lib/hyperstack/provisioning.rb b/lib/hyperstack/provisioning.rb
index 2738275..19a3d33 100644
--- a/lib/hyperstack/provisioning.rb
+++ b/lib/hyperstack/provisioning.rb
@@ -257,21 +257,6 @@ module HyperstackVM
       script.join("\n")
     end
 
-    def litellm_decommission_script
-      script = []
-      script << 'set -euo pipefail'
-      script << 'sudo systemctl stop litellm 2>/dev/null || true'
-      script << 'sudo systemctl disable litellm 2>/dev/null || true'
-      script << 'sudo rm -f /etc/systemd/system/litellm.service'
-      script << 'sudo systemctl daemon-reload'
-      script << 'sudo rm -f /ephemeral/litellm-config.yaml'
-      script << 'sudo rm -rf /ephemeral/litellm-env'
-      script << 'sudo rm -f /ephemeral/litellm.log'
-      script << "sudo ufw --force delete allow from #{Shellwords.escape(@config.wireguard_subnet)} to any port 4000 proto tcp >/dev/null 2>&1 || true"
-      script << 'echo litellm-decommission-ok'
-      script.join("\n")
-    end
-
     private
 
     def normalized_model_list(models)
@@ -336,12 +321,6 @@ module HyperstackVM
       raise Error, "vLLM install failed: #{output.strip}" unless status.success?
     end
 
-    def decommission_litellm(host)
-      info "Removing deprecated LiteLLM service from #{host} if present..."
-      output, status = @ssh_stream_runner.call(host, @scripts.litellm_decommission_script)
-      raise Error, "LiteLLM decommission failed: #{output.strip}" unless status.success?
-    end
-
     def setup_vllm_stack(host, preset_config: nil)
       install_vllm(host, preset_config: preset_config)
     end