Stop adding duplicate OpenAFS PPA on executors

Our Zuul executors already have the openafs-client role which
includes a /etc/apt/sources.list.d/openafs.list file for our PPA
with custom OpenAFS package backports. The zuul-executor role
doesn't need to add another copy (and the duplicate is breaking apt
now).

Change-Id: Icdb6d2f3bf36b0cad901d42c3d97873677ee87cb

playbooks/roles/zuul-executor/tasks/main.yaml

@@ -1,20 +1,3 @@
-- name: Include OS-specific variables
-  include_vars: "{{ lookup('first_found', params) }}"
-  vars:
-    params:
-      files: "{{ distro_lookup_path }}"
-      paths:
-        - 'vars'
-
-- name: Install PPAs
-  include_role:
-    name: install-apt-repo
-  vars:
-    repo_name: "{{ item.name }}"
-    repo_key: "{{ item.key }}"
-    repo_content: "{{ item.content }}"
-  loop: '{{ zuul_executor_ppas }}'
-
 - name: Write key for talking to nodepool nodes
   copy:
     content: '{{ nodepool_test_node_ssh_private_key_contents }}'

playbooks/roles/zuul-executor/vars/Ubuntu.focal.yaml

@@ -1,6 +0,0 @@
-zuul_executor_ppas:
-  # We use later HWE kernels for better memory managment, requiring an
-  # updated AFS version which we install from our custom ppa.
-  - name: openafs
-    content: "deb http://ppa.launchpad.net/openstack-ci-core/openafs/ubuntu focal main"
-    key: "{{ openstack_ci_core_ppa_key }}"

playbooks/roles/zuul-executor/vars/Ubuntu.jammy.yaml

@@ -1,6 +0,0 @@
-zuul_executor_ppas:
-  # We use later HWE kernels for better memory managment, requiring an
-  # updated AFS version which we install from our custom ppa.
-  - name: openafs
-    content: "deb http://ppa.launchpad.net/openstack-ci-core/openafs/ubuntu jammy main"
-    key: "{{ openstack_ci_core_ppa_key }}"

playbooks/roles/zuul-executor/vars/default.yaml

@@ -1,6 +0,0 @@
-zuul_executor_ppas:
-  # We use later HWE kernels for better memory managment, requiring an
-  # updated AFS version which we install from our custom ppa.
-  - name: openafs
-    content: "deb http://ppa.launchpad.net/openstack-ci-core/openafs-amd64-hwe/ubuntu xenial main"
-    key: "{{ openstack_ci_core_ppa_key }}"

playbooks/roles/zuul-executor/vars/main.yaml

@@ -1,30 +0,0 @@
-openstack_ci_core_ppa_key: |
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-  5pX70jigBqjtJ0PZGm7jELb8bB70SVSGsvwHmEz0pSs=
-  =cc1L
-  -----END PGP PUBLIC KEY BLOCK-----