Omit empty CurseForge relations in release uploads

scripts/publish_mod_sites.py

@@ -140,7 +140,6 @@ def release_metadata(args: argparse.Namespace) -> tuple[dict, dict]:
         "gameVersionNames": [args.minecraft, "NeoForge", "Client", "Server", f"Java {args.java}"],
         "releaseType": args.channel,
         "isMarkedForManualRelease": False,
-        "relations": {"projects": []},
     }
     return modrinth, curseforge