[master] 520442b This never really worked so not a change per se

[Federico G. Schwindt]

commit 520442bb440d40af1437c599df8c40a98a442f5a
Author: Federico G. Schwindt <fgsch at lodoss.net>
Date:   Fri Mar 10 16:50:37 2017 +0000

    This never really worked so not a change per se

diff --git a/doc/sphinx/whats-new/upgrading-5.1.rst b/doc/sphinx/whats-new/upgrading-5.1.rst
index 4c711dc..ab6104f 100644
--- a/doc/sphinx/whats-new/upgrading-5.1.rst
+++ b/doc/sphinx/whats-new/upgrading-5.1.rst
@@ -133,12 +133,6 @@ Now ``beresp.storage`` is initialized with a storage backend before
 ``beresp.storage`` after its execution will be used. The configured
 nuke limit is used in all cases.
 
-vcl_backend_error
-~~~~~~~~~~~~~~~~~
-
-* ``beresp.backend.ip`` is only available when the backend connection
-  is open, and hence not in ``vcl_backend_error``.
-
 VMOD std
 ~~~~~~~~