Add a note about cleaning out unreferenced base text files, as noted by
Mattias EngdegÄr.

* notes/wc-ng-design: add note about "svn cleanup"


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@873149 13f79535-47bb-0310-9956-ffa450edef68
1 file changed