We can use PowerApps to customize the SharePoint list form, but we can not delete customized forms in the PowerApps Admin Center. We need to delete them from SharePoint. Customized form will remain on PowerApps If we deleted the SharePoint list. It is causing trouble in management because there is no way to delete the customized form. If we can deleted the customized form from PowerApps side, it will be nice to manage.
But the best implementation is that when we delete the SharePoint list, the customized form on PowerApps will also be deleted.
I hope you to consider the implementation. Thank you.