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

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

Author: pre-commit-ci[bot]

mypyc/irbuild/for_helpers.py

@@ -28,9 +28,7 @@
     TypeAlias,
     Var,
 )
-from mypy.types import (
-    TupleType,
-)
+from mypy.types import TupleType
 from mypyc.ir.ops import (
     ERR_NEVER,
     BasicBlock,