bpo-46316: optimize pathlib.Path.iterdir() (GH-30501)

`os.listdir()` doesn't return entries for `.` or `..`, so we don't need to
check for them here.

Author: barneygale

Lib/pathlib.py

@@ -1013,9 +1013,6 @@ def iterdir(self):
         result for the special paths '.' and '..'.
         """
         for name in self._accessor.listdir(self):
-            if name in {'.', '..'}:
-                # Yielding a path object for these makes little sense
-                continue
             yield self._make_child_relpath(name)
 
     def glob(self, pattern):

Misc/NEWS.d/next/Library/2022-01-09-15-04-56.bpo-46316.AMTyd0.rst

@@ -0,0 +1 @@
+Optimize :meth:`pathlib.Path.iterdir` by removing an unnecessary check for special entries.