example:I want delete friendsmap.
Use svn to checkout the entire source tree, then svn rm
to remove the directory from the working set, then commit.
Better yet, you can use svn rm URL -m "Deleting that folder 'friendsmap' I don't like"
and provide the url of that folder, if you want to do it quicker. (from svn rm help: "Each item specified by a URL is deleted from the repository via an immediate commit.")