Clean up imports (#5467)

python/sglang/lang/backend/anthropic.py

@@ -1,7 +1,3 @@
-from typing import List, Optional, Union
-
-import numpy as np
-
 from sglang.lang.backend.base_backend import BaseBackend
 from sglang.lang.chat_template import get_chat_template
 from sglang.lang.interpreter import StreamExecutor

python/sglang/lang/backend/base_backend.py

@@ -1,4 +1,4 @@
-from typing import Callable, List, Optional, Union
+from typing import List, Optional, Union
 
 from sglang.lang.chat_template import get_chat_template
 from sglang.lang.choices import ChoicesDecision, ChoicesSamplingMethod

python/sglang/lang/backend/openai.py

@@ -2,7 +2,7 @@ import dataclasses
 import logging
 import time
 import warnings
-from typing import Callable, List, Optional, Union
+from typing import List, Optional, Union
 
 import numpy as np
 

python/sglang/lang/backend/vertexai.py

@@ -1,6 +1,5 @@
 import os
 import warnings
-from typing import Optional
 
 from sglang.lang.backend.base_backend import BaseBackend
 from sglang.lang.chat_template import get_chat_template