Ruff: clean up doubled-up typing imports

boxtree/cost.py

@@ -62,7 +62,6 @@
 """
 
 from abc import ABC, abstractmethod
-from collections.abc import Mapping
 from functools import partial
 from typing import TYPE_CHECKING, ClassVar
 
@@ -79,6 +78,7 @@
 if TYPE_CHECKING:
     from collections.abc import Mapping
 
+
 Template = partial(Template, strict_undefined=True)
 
 

boxtree/fmm.py

@@ -35,16 +35,14 @@
 
 from pytools import ProcessLogger
 
-from boxtree.traversal import FMMTraversalInfo
-from boxtree.tree import Tree
-
 
 if TYPE_CHECKING:
     from arraycontext import ArrayContext
 
     from boxtree.traversal import FMMTraversalInfo
     from boxtree.tree import Tree
 
+
 logger = logging.getLogger(__name__)