Fix the empty SLS binding when SLO disabled

ssoauth/sso_utils.py

@@ -96,6 +96,8 @@ def create_onelogin_settings(template=app_settings.ONELOGIN_SETTINGS_TEMPLATE):
     settings["sp"]["assertionConsumerService"]["url"] = host_full + urls.reverse("sso-saml2-acs")
     if app_settings.SP_SLS_ENABLED:
         settings["sp"]["singleLogoutService"]["url"] = host_full + urls.reverse("sso-saml2-sls")
+    else:
+        del settings["sp"]["singleLogoutService"]
     settings["sp"]["x509cert"] = read_key(app_settings.SP_CERT)
     settings["sp"]["privateKey"] = read_key(app_settings.SP_KEY)
     # done