Switching the delete param handler to use rm

It seems ansible is walking through the files before delete it and
there are a lot of files, it's adding 205-40 minutes in the overcloud
deployment, causing time out in the jobs.

Change-Id: I84ff0350f97a376d7520a5fd460836f21c1ef801

tripleo_ansible/roles/tripleo-container-image-prepare/handlers/main.yml

@@ -16,15 +16,11 @@
 
 
 - name: Delete param file
-  file:
-    dest: "{{ prepare_param.path }}"
-    state: absent
+  command: "rm -rf '{{ prepare_param.path }}'"
   check_mode: false
   become: true
 
 - name: Delete role file
-  file:
-    dest: "{{ role_data.path }}"
-    state: absent
+  command: "rm -rf '{{ role_data.path }}'"
   check_mode: false
   become: true