hotfix: remove buggy import in hosted_agent/agent.py

Author: celesteanglm

src/game_sdk/hosted_game/agent.py

@@ -1,6 +1,5 @@
 from typing import List, Any, Dict, Optional, Union, Set
 from dataclasses import dataclass, asdict
-from string import ContentLLMTemplate
 import json
 import uuid
 import requests