chore: remove legacy startup paths

deploy/systemd/evotraders.service

@@ -1,22 +0,0 @@
-[Unit]
-Description=大时代 Production Service
-After=network.target
-# COMPATIBILITY_SURFACE: stable
-# OWNER: ops-team
-# SEE: docs/legacy-inventory.md#gateway-first-production-example
-#
-# This systemd unit runs the gateway-first production topology.
-# It executes scripts/run_prod.sh which launches backend.main as the
-# primary gateway/runtime process. For split-service deployment topology,
-# see docs/current-architecture.md and deploy/README.md
-
-[Service]
-Type=simple
-WorkingDirectory=/root/code/evotraders
-ExecStart=/root/code/evotraders/scripts/run_prod.sh
-Restart=always
-RestartSec=5
-Environment=PYTHONUNBUFFERED=1
-
-[Install]
-WantedBy=multi-user.target