How can I delete unused/unwanted class?

I have some classes that are old and no longer in use by any of the components that I have. However, I tried to delete them but to no avail. How can I clean them up?

CleanShot 2023-03-16 at 13.44.10

Thank you

Hi @zhiliang ,

here is a previous topic that may help.

Hey @knk sadly, i can’t seems to replicate it. I am still stuck with the unused classes

You can’t delete it if it’s in use. Only change the name. Click “clean up” in the top right corner to remove unused classes.