[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

mypy/checker.py

@@ -148,8 +148,6 @@
 from mypy.operators import flip_ops, int_op_to_method, neg_ops
 from mypy.options import PRECISE_TUPLE_TYPES, Options
 from mypy.patterns import AsPattern, StarredPattern
-from mypy.traverser import TraverserVisitor
-from mypy.traverser import TraverserVisitor
 from mypy.plugin import Plugin
 from mypy.plugins import dataclasses as dataclasses_plugin
 from mypy.scope import Scope
@@ -318,18 +316,18 @@ def __exit__(self, exc_type: object, exc_val: object, exc_tb: object) -> Literal
 
 class ReturnTypeFinder(TraverserVisitor):
     """Visitor to collect return types from return statements in a function body.
-    
+
     This is used to infer return types for functions without explicit return type annotations.
     """
-    
+
     def __init__(self, typemap: dict[Expression, Type]) -> None:
         self.typemap = typemap
         self.return_types: list[Type] = []
-    
+
     def visit_return_stmt(self, o: ReturnStmt) -> None:
         if o.expr is not None and o.expr in self.typemap:
             self.return_types.append(self.typemap[o.expr])
-    
+
     def visit_func_def(self, o: FuncDef) -> None:
         # Skip nested functions
         pass