remove /etc/elasticsearch/security directory creation

This directory isn't used anywhere in this ansible-role

tasks/xpack/security/elasticsearch-security.yml

@@ -48,11 +48,3 @@
   become: yes
   template: src=security/role_mapping.yml.j2 dest={{ es_conf_dir }}/role_mapping.yml owner={{ es_user }} group={{ es_group }} mode=0644 force=yes
   when: es_role_mapping is defined
-
-#------------------------------------------------------------------------------------
-
-#Ensure security conf directory is created
-- name: Ensure security conf directory exists
-  become: yes
-  file: path={{ es_conf_dir }}/security state=directory owner={{ es_user }} group={{ es_group }}
-  changed_when: False