delete dead feature branches?

[Jason Merrill]

The SVN book 
(http://svnbook.red-bean.com/nightly/en/svn.branchmerge.basicmerging.html) 
suggests deleting feature branches that have been merged into the trunk; 
I think this would help to reduce the clutter in the branches directory 
and avoid confusion with people expecting to find ongoing development on 
abandoned branches.  The branches would continue to exist in the 
revision history, just not not in the current revision.

Jason