CCA 12.8 provides the function to delete discovered components. Please see attached screenshot.
You can find discovered components across your servers on [Software] tab. If you need, you can do filtering the result. You can delete the selected components without deleting servers.
Max records per page is 250 on CCA 12.7. CCA 12.8 can show 900 records per page. You can customize page size using Table View.
I hope you find it informative.
Thanks