Revert unnecessary path operation changes

Author: AA-Turner

sphinx/project.py

@@ -5,13 +5,12 @@
 import contextlib
 import os
 from glob import glob
-from pathlib import Path
 from typing import TYPE_CHECKING
 
 from sphinx.locale import __
 from sphinx.util import logging
 from sphinx.util.matching import get_matching_files
-from sphinx.util.osutil import os_path, path_stabilize, relpath
+from sphinx.util.osutil import path_stabilize, relpath
 
 if TYPE_CHECKING:
  from collections.abc import Iterable
@@ -25,7 +24,7 @@ class Project:
 
  def __init__(self, srcdir: str | os.PathLike[str], source_suffix: Iterable[str]) -> None:
  #: Source directory.
- self.srcdir = Path(srcdir)
+ self.srcdir = srcdir
 
  #: source_suffix. Same as :confval:`source_suffix`.
  self.source_suffix = tuple(source_suffix)
@@ -115,7 +114,6 @@ def doc2path(self, docname: str, absolute: bool) -> str:
  # Backwards compatibility: the document does not exist
  filename = docname + self._first_source_suffix
 
- filename = os_path(filename)
  if absolute:
  return os.path.join(self.srcdir, filename)
  return filename