Revert "Test also the hidden flag for symlink target."

This reverts commit 59ee5f3.

Lib/site.py

@@ -177,22 +177,14 @@ def addpackage(sitedir, name, known_paths):
         (getattr(st, 'st_file_attributes', 0) & stat.FILE_ATTRIBUTE_HIDDEN)):
         _trace(f"Skipping hidden .pth file: {fullname!r}")
         return
+    _trace(f"Processing .pth file: {fullname!r}")
     try:
         # locale encoding is not ideal especially on Windows. But we have used
         # it for a long time. setuptools uses the locale encoding too.
         f = io.TextIOWrapper(io.open_code(fullname), encoding="locale")
     except OSError:
         return
     with f:
-        if stat.S_ISLNK(st.st_mode) and hasattr(st, 'st_flags'):
-            try:
-                st = os.fstat(f.fileno())
-            except OSError:
-                return
-            if st.st_flags & stat.UF_HIDDEN:
-                _trace(f"Skipping hidden .pth file: {fullname!r}")
-                return
-        _trace(f"Processing .pth file: {fullname!r}")
         for n, line in enumerate(f):
             if line.startswith("#"):
                 continue