如何正确删除svn：externals并将其替换为同一目录的本地（非外部）副本？

I realize there are similar questions on this topic, but I still cannot find the answer for my specific case. I have a project that I inherited from another team's repo. We did an "svn switch --relocate" to redirect our checked out copies to our server, instead of theirs. But, they still have an svn:externals for a subdirectory and it still points to one of their other repositories.I realize there are similar questions on this t