Removing old branches

From: Edward Diener (eldiener_at_[hidden])
Date: 2019-11-15 10:56:59

I received an issue about Boost PP having lots of old branches which the 
issuer would like removed. I notice most other Boost libraries also have 
lots of old branches. Is there any policy about removing these old 
branches from a Boost library repository ? Many of these old branches 
are svn-branches, but most of them do not have any value any more and, 
of course, do not affect the current 'develop' or 'master' branch.