revert(dankserver): drop copyparty command override

The ac edition's entrypoint (cpp.sh -> python3 -m copyparty) consumes config
via /z/initcfg, not argv; -v is the volume flag and ate the next arg,
crash-looping argparse. The image mounts everything under /cfg/copyparty as
volumes by marker-file convention — plant the marker on the host instead.

dankserver/compose.yaml

@@ -77,7 +77,6 @@ services:
     image: ghcr.io/9001/copyparty-ac:latest
     container_name: copyparty
     restart: unless-stopped
-    command: ["-v", "-m", "/w"]
     environment:
       COPAY_PASS: "${COPAY_PASS}"
       COPAY_MODE: rw