removing a local portfile repository

[Langer, Stephen A. (Fed)]

Hi --

https://guide.macports.org/chunked/development.local-repositories.html contains 
instructions for adding a local port file repository.  When I'm done with the 
local repository, how can I delete it?  Is removing it from sources.conf 
sufficient?  Do I somehow need to undo the effect of running portindex?
Thanks.
  
   -- Steve