Need help with un-used add on domain directories

Hi all,

When you sell a site, do you actually delete the add on domain directory?

I realised it is taking up some inodes and Im planning to remove them.
Is there a way to keep the directory there but not take up the inodes?

 

Was thinking of zipping them.

 

That would be a perfect solution and would only take up 1 inode.

 

Thanks, I compressed the folder and its working.