Remove mouting openstack auth creds in restore job

tekton-task-templates/restore_pv_job.yaml

@@ -15,10 +15,6 @@ spec:
         job-name: $TASK-$DRUPALSITE
     spec:
       volumes:
-        - name: openstack-credentials
-          secret:
-            secretName: openstack-auth-secrets
-            defaultMode: 420
         - name: velero-restic-credentials
           secret:
             secretName: velero-restic-credentials
@@ -56,13 +52,6 @@ spec:
             - name: velero-restic-credentials
               readOnly: true
               mountPath: /tmp
-          lifecycle:
-            preStop:
-              exec:
-                command:
-                  - /bin/sh
-                  - '-c'
-                  - umount /mnt; sleep 10
           terminationMessagePath: /dev/termination-log
           terminationMessagePolicy: File
           imagePullPolicy: Always