Don't use redirect binding on ACS endpoint.

example/sp-wsgi/sp_conf.py.example

@@ -25,7 +25,6 @@ CONFIG = {
         "sp": {
             "endpoints": {
                 "assertion_consumer_service": [
-                    ("%s/acs/redirect" % BASE, BINDING_HTTP_REDIRECT),
                     ("%s/acs/post" % BASE, BINDING_HTTP_POST)
                 ],
             }

src/saml2/metadata.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python
-from saml2.md import AttributeProfile, entity_descriptor_from_string
+from saml2.md import AttributeProfile
 from saml2.sigver import security_context
 from saml2.config import Config
 from saml2.validate import valid_instance