bitbake: Sync module import cleanups back from bitbake trunk

Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>

bitbake/lib/bb/fetch/wget.py

@@ -25,7 +25,7 @@ BitBake build tools.
 #
 # Based on functions from the base bb module, Copyright 2003 Holger Schurig
 
-import os, re
+import os
 import bb
 from   bb import data
 from   bb.fetch import Fetch