Remove RISCOS support
diff --git a/Lib/site.py b/Lib/site.py
index 1d3183a..47a46f6 100644
--- a/Lib/site.py
+++ b/Lib/site.py
@@ -167,7 +167,7 @@
         return
     names.sort()
     for name in names:
-        if name.endswith(os.extsep + "pth"):
+        if name.endswith(".pth"):
             addpackage(sitedir, name, known_paths)
     if reset:
         known_paths = None