Fix ruff issues

Author: manveerxyz

src/prime_rl/utils/monitor/__init__.py

@@ -1,5 +1,4 @@
 from pathlib import Path
-from typing import Any
 
 from transformers.tokenization_utils import PreTrainedTokenizer
 

src/prime_rl/utils/monitor/prime.py

@@ -1,4 +1,3 @@
-import json
 import os
 import time
 from pathlib import Path

src/prime_rl/utils/monitor/wandb.py

@@ -9,7 +9,7 @@
 import wandb
 from transformers.tokenization_utils import PreTrainedTokenizer
 
-from prime_rl.utils.config import LogExtrasConfig, WandbMonitorConfig
+from prime_rl.utils.config import WandbMonitorConfig
 from prime_rl.utils.logger import get_logger
 from prime_rl.utils.monitor.base import Monitor
 from prime_rl.utils.pydantic_config import BaseSettings