i18n: remove unnecessary os.path.normpath call

mercurial/i18n.py

@@ -16,7 +16,7 b' else:'
 
 base = os.path.dirname(module)
 for dir in ('.', '..'):
-    localedir = os.path.normpath(os.path.join(base, dir, 'locale'))
+    localedir = os.path.join(base, dir, 'locale')
     if os.path.isdir(localedir):
         break