Remove StackAction from Octavia deployment

Since ephemeral Heat, StackAction is now always
CREATE. Subsequentaly, it no longer serves the
intended purpose for the Octavia deployment.

This change removes StackAction from the template.

Partial-Bug: #1936138
Depends-on: https://review.opendev.org/c/openstack/tripleo-ansible/+/801299
Change-Id: Ia3f4de0028a4c264a9f2d1277878221969e180d5

deployment/octavia/octavia-deployment-config.j2.yaml

@@ -31,13 +31,6 @@ parameters:
     description: Mapping of service endpoint -> protocol. Typically set
                  via parameter_defaults in the resource registry.
     type: json
-  StackAction:
-    type: string
-    description: >
-      Heat action on performed top-level stack.  Note StackUpdateType is
-      set to UPGRADE when a major-version upgrade is in progress.
-    constraints:
-    - allowed_values: ['CREATE', 'UPDATE']
   OctaviaAmphoraImageName:
     description: The glance image name used when spawning amphorae. Default
                  is an empty string which will use the file name as the image
@@ -258,7 +251,6 @@ outputs:
                   octavia_group_vars_dir: "{{playbook_dir}}/octavia-ansible/group_vars"
                   container_cli: { get_param: ContainerCli }
                   enable_log_offloading: { get_param: OctaviaLogOffload }
-                  stack_action: { get_param: StackAction }
               no_log: "{{ hide_sensitive_logs | bool }}"
             - name: Make needed directories on the undercloud
               become: true