containerd-common,containerd,docker: remove ubuntu arch specific vars

By removing ancient version we don't need arch specific vars

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

roles/container-engine/containerd/vars/ubuntu.yml

@@ -0,0 +1,20 @@
+---
+containerd_package_info:
+  pkg_mgr: apt
+  pkgs:
+    - name: "{{ containerd_versioned_pkg[containerd_version | string] }}"
+      force: false
+
+containerd_repo_key_info:
+  pkg_key: apt_key
+  url: '{{ containerd_ubuntu_repo_gpgkey }}'
+  repo_keys:
+    - '{{ containerd_ubuntu_repo_repokey }}'
+
+containerd_repo_info:
+  pkg_repo: apt_repository
+  repos:
+    - >
+      deb {{ containerd_ubuntu_repo_base_url }}
+      {{ ansible_distribution_release|lower }}
+      {{ containerd_ubuntu_repo_component }}