Remove unused imports.

langgraph/managed/few_shot.py

@@ -13,7 +13,6 @@ from langchain_core.runnables import RunnableConfig
 from typing_extensions import Self
 
 from langgraph.channels.base import AsyncChannelsManager, ChannelsManager
-from langgraph.checkpoint.base import CheckpointTuple
 from langgraph.managed.base import ManagedValue, V
 from langgraph.pregel.io import read_channels
 from langgraph.pregel.types import PregelTaskDescription

tests/checkpoint/test_memory.py

@@ -1,5 +1,3 @@
-from typing import AsyncIterator
-
 import pytest
 from langchain_core.runnables import RunnableConfig
 

tests/test_pregel.py

@@ -9,7 +9,6 @@ from typing import (
     Annotated,
     Any,
     Generator,
-    Iterator,
     Literal,
     Optional,
     Sequence,
@@ -26,7 +25,6 @@ from langgraph.channels.binop import BinaryOperatorAggregate
 from langgraph.channels.context import Context
 from langgraph.channels.last_value import LastValue
 from langgraph.channels.topic import Topic
-from langgraph.checkpoint.base import CheckpointMetadata, CheckpointTuple
 from langgraph.checkpoint.sqlite import SqliteSaver
 from langgraph.errors import InvalidUpdateError
 from langgraph.graph import END, Graph