removing mongo_app_dir (not needed)

playbooks/roles/mongo/defaults/main.yml

@@ -8,7 +8,6 @@ mongo_cluster_members:
 
 mongo_data_dir: "{{ data_dir }}/mongo"
 mongo_log_dir: "{{ log_dir }}/mongo"
-mongo_app_dir: "{{ app_dir }}/mongo"
 mongo_user: mongodb
 MONGO_USERS:
   - user: cs_comments_service

playbooks/roles/mongo/tasks/main.yml

@@ -30,7 +30,6 @@
   with_items:
     - "{{ mongo_data_dir }}"
     - "{{ mongo_dbpath }}"
-    - "{{ mongo_app_dir }}"
 
 - name: mongo | stop mongo service
   service: name=mongodb state=stopped