Remove contentdir hack

Latest version of CentOS should not need this anymore

Change-Id: Ief83c39420cfb4509f16d4e357d704025b116134

tools/playbooks/saio_single_node_setup/install_dependencies.yaml

@@ -15,32 +15,6 @@
 - hosts: all
   become: true
   tasks:
-    - name: Check for /etc/yum/vars/contentdir
-      stat:
-        path: /etc/yum/vars/contentdir
-      register: yum_contentdir
-
-    - when: not yum_contentdir.stat.exists
-      block:
-
-      - name: Discover package architecture
-        command: rpm -q --qf "%{arch}" -f /etc/redhat-release
-        register: rpm_arch
-
-      - debug:
-          msg: Package architecture is '{{ rpm_arch.stdout }}'
-
-      - name: Set contentdir to altarch
-        set_fact:
-          yum_contentdir: altarch
-        when: rpm_arch.stdout in ['aarch64', 'ppc64le']
-
-      - name: Populate /etc/yum/vars/contentdir
-        copy:
-          dest: /etc/yum/vars/contentdir
-          content: "{{ yum_contentdir|default('centos') }}"
-        become: true
-
     - name: installing dependencies
       yum: name={{ item }} state=present
       with_items: