[Minor] cleanup unused imports (#6358)

python/sglang/srt/managers/schedule_policy.py

@@ -22,11 +22,7 @@ from typing import Dict, List, Optional, Set, Union
 
 import torch
 
-from sglang.srt.managers.schedule_batch import (
-    Req,
-    ScheduleBatch,
-    global_server_args_dict,
-)
+from sglang.srt.managers.schedule_batch import Req, ScheduleBatch
 from sglang.srt.mem_cache.base_prefix_cache import BasePrefixCache
 from sglang.srt.mem_cache.memory_pool import TokenToKVPoolAllocator
 from sglang.srt.mem_cache.radix_cache import RadixCache, TreeNode