Any consequences over removing a subdir permanently?

[S I]

Hi

I know how to delete and commit files to the attic and on the next checkout 
do a -P to prune out empty dirs but I have not seen any documentation on how 
to remove empty dirs/subdirs permanently.  Is this not recommended lest you 
have to retrieve dead files later? And CVS wouldn't know what structure to 
retrieve them to?  Should I or not delete the empty dirs on the server side 
or too dangerous?  We have many, and I mean many, empty dirs just sitting 
there!

Thanks

Steve