Jira administrators can choose to either enable or disable QAlity - Test Management for Jira for any of their projects. This can be done via Jira Settings → Apps → QAlity → Settings. Simply toggle the switch on or off for the projects to enable/disable QAlity. This change will only cause the QAlity to stop showing up in the Jira issues, but no data will be removed. If you ever decide to re-enable QAlity for the project, all of the test cases that were created in the past will be there.
You can also choose to disable whether QAlity will be enabled in new projects by default. If disabled any newly created project won’t be using QAlity, until enabled by the administrator.