Fix stray type error in fs.py (#10182)

[ci skip-rust-tests]

src/python/pants/engine/fs.py

@@ -4,7 +4,7 @@
 import os
 from dataclasses import dataclass
 from pathlib import Path
-from typing import TYPE_CHECKING, Iterable, Optional, Tuple
+from typing import Any, Iterable, Optional, Tuple
 
 from pants.engine.collection import Collection
 from pants.engine.rules import RootRule, side_effecting
@@ -18,9 +18,6 @@
 )
 from pants.util.meta import frozen_after_init
 
-if TYPE_CHECKING:
-    from pants.engine.internals.scheduler import SchedulerSession
-
 
 @dataclass(frozen=True)
 class FileContent:
@@ -285,11 +282,10 @@ class UrlToFetch:
 class Workspace:
     """Abstract handle for operations that touch the real local filesystem."""
 
-    _scheduler: "SchedulerSession"
+    # TODO: SchedulerSession. Untyped because `fs.py` and `scheduler.py` have a cycle.
+    _scheduler: Any
 
-    def materialize_directory(
-        self, directory_to_materialize: DirectoryToMaterialize
-    ) -> MaterializeDirectoryResult:
+    def materialize_directory(self, directory_to_materialize: DirectoryToMaterialize):
         """Materialize one single directory digest to disk.
 
         If you need to materialize multiple, you should use the parallel materialize_directories()
@@ -299,7 +295,7 @@ def materialize_directory(
 
     def materialize_directories(
         self, directories_to_materialize: Tuple[DirectoryToMaterialize, ...]
-    ) -> MaterializeDirectoriesResult:
+    ):
         """Materialize multiple directory digests to disk in parallel."""
         return self._scheduler.materialize_directories(directories_to_materialize)