pythonGH-95815: Document less specific error for os.remove (pythonGH-99571)

os.remove can raise PermissionError instead of IsADirectoryError,
when the object to be removed is a directory (in particular on
macOS).

This reverts a change done in pythonGH-14262.
(cherry picked from commit 1cae31d)

Co-authored-by: Ronald Oussoren <ronaldoussoren@mac.com>

Author: ronaldoussoren

Doc/library/os.rst

@@ -2326,7 +2326,7 @@ features:
 .. function:: remove(path, *, dir_fd=None)
 
    Remove (delete) the file *path*.  If *path* is a directory, an
-   :exc:`IsADirectoryError` is raised.  Use :func:`rmdir` to remove directories.
+   :exc:`OSError` is raised.  Use :func:`rmdir` to remove directories.
    If the file does not exist, a :exc:`FileNotFoundError` is raised.
 
    This function can support :ref:`paths relative to directory descriptors