Remove Kiln from local courseware setup

ansible/roles/directories/tasks/main.yml

@@ -13,7 +13,6 @@
     - "{{ courseware_models_dir }}"
     - "{{ courseware_datasets_dir }}"
     - "{{ courseware_tools_dir }}"
-    - "{{ courseware_apps_dir }}"
     - "{{ courseware_downloads_dir }}"
     - "{{ courseware_lab1_dir }}"
     - "{{ courseware_lab2_dir }}"