Remove invalid comment in urllib.request. (#1054)

Lib/urllib/request.py

@@ -1657,14 +1657,10 @@ else:
         of the 'file' scheme; not recommended for general use."""
         return quote(pathname)
 
-# This really consists of two pieces:
-# (1) a class which handles opening of all sorts of URLs
-#     (plus assorted utilities etc.)
-# (2) a set of functions for parsing URLs
-# XXX Should these be separated out into different modules?
-
 
 ftpcache = {}
+
+
 class URLopener:
     """Class to open URLs.
     This is a class rather than just a subroutine because we may need