fix: remove --auth-url from wzp-relay (wzp-web doesn't send auth to relay)

wzp-web connects to relay via QUIC and does crypto handshake directly,
but relay with --auth-url expects AuthToken first → handshake fails.
Auth at relay level will be re-added when wzp-web learns to forward tokens.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

warzone/deploy/docker/docker-compose.yml

@@ -56,8 +56,6 @@ services:
     command:
       - "--listen"
       - "0.0.0.0:4433"
-      - "--auth-url"
-      - "http://warzone-server:7700/v1/auth/validate"
     networks:
       backend:
         ipv4_address: 172.28.0.10