removed some useless code

bzr revid: nicolas.vanhoren@openerp.com-20130621143648-fh7vnyt3o6a7swqj

addons/web/controllers/main.py

@@ -35,7 +35,6 @@ from openerp.tools.translate import _
 from openerp.tools import config
 
 from .. import http
-http = http
 
 from openerp.addons.web.http import request
 

addons/web/http.py

@@ -1075,7 +1075,7 @@ class Root(object):
         if not router:
             router = self._build_router(db)
             with self.db_routers_lock:
-                router = self.db_routers[db] = router
+                self.db_routers[db] = router
         return router
 
     def find_handler(self):