ServiceWorker

fc28095e - Remove registration's uninstalling flag checking in Unregister

Remove registration's uninstalling flag checking in Unregister The step that this patch removes is a bit that was used before we introduced the single job queue that serializes Register/Update/Unregister jobs. By using the single job queue, the uninstalling flag set in the Unregister cannot be cleared until the Unregister job completes. So, we remove this unnecessary step. Fixes #855.