Drop --token from the hand-started worker examples

The worker reads FLUKSIO_WORKER_TOKEN itself; on the command line the
token shows in ps. The --token row in the options table says so.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013GAeg4Jo6xjZzjwy9QDWMQ

docs/code/cli.md

@@ -231,8 +231,7 @@ agent's own parser: it is the same program `fluksio-worker` installs, so the
 two are interchangeable:
 
 ```sh
-fluksio worker --url wss://api.${DOMAIN}/api/v1/workers/attach \
-               --token "$FLUKSIO_WORKER_TOKEN" --labels gpu
+fluksio worker --url wss://api.${DOMAIN}/api/v1/workers/attach --labels gpu
 ```
 
 See [Remote workers](workers.md).