Remove log config append
diff --git a/roles/manila/vars/main.yml b/roles/manila/vars/main.yml
index 48ef289..196e68b 100644
--- a/roles/manila/vars/main.yml
+++ b/roles/manila/vars/main.yml
@@ -23,8 +23,6 @@
       share: 3
   conf:
     manila:
-      DEFAULT:
-        log_config_append: null
       oslo_messaging_notifications:
         driver: noop