Cleanup support for removed OS in bootstrap

- centos < 8
- debian 10

roles/system_packages/tasks/main.yml

@@ -15,37 +15,6 @@
     - ansible_pkg_mgr == 'zypper'
   tags: bootstrap_os
 
-- name: Add debian 10 required repos
-  when:
-    - ansible_distribution == "Debian"
-    - ansible_distribution_version == "10"
-  tags:
-    - bootstrap_os
-  block:
-    - name: Add Debian Backports apt repo
-      apt_repository:
-        repo: "deb http://deb.debian.org/debian {{ ansible_distribution_release }}-backports main"
-        state: present
-        filename: debian-backports
-
-    - name: Set libseccomp2 pin priority to apt_preferences on Debian buster
-      copy:
-        content: |
-          Package: libseccomp2
-          Pin: release a={{ ansible_distribution_release }}-backports
-          Pin-Priority: 1001
-        dest: "/etc/apt/preferences.d/libseccomp2"
-        owner: "root"
-        mode: "0644"
-
-- name: Update package management cache (APT)
-  apt:
-    update_cache: true
-    cache_valid_time: 3600
-  when: ansible_os_family == "Debian"
-  tags:
-    - bootstrap_os
-
 - name: Remove legacy docker repo file
   file:
     path: "{{ yum_repo_dir }}/docker.repo"