CORD-1234 Do not save intermediate containers

Change-Id: I85198dbfc20b5d47b3f8f74a8f6583b11c1c3f95
diff --git a/roles/xos-core-build/tasks/main.yml b/roles/xos-core-build/tasks/main.yml
index bbd84d7..88e6af6 100644
--- a/roles/xos-core-build/tasks/main.yml
+++ b/roles/xos-core-build/tasks/main.yml
@@ -56,4 +56,3 @@
     dockerfile: "containers/xos/Dockerfile.UI"
     pull: False
     force: True
-    rm: False