In mac os x terminal (linux) you can navigate to the desired directory and run the following command to remove any specific file or folder.
find . -name CVS -exec rm -rf {} \\;
Basically a “find” command can be concatenated with other commands so the same operation can be applied recursively to all the found results.
keywords: terminal remove all cvs folders
source: http://www.phinesolutions.com/remove-the-cvs-folders.html