Sharing a fun little hack I just discovered!
When trying to unversion a TortoiseSVN folder, we can do it in two ways:
1. Iterate recursively over folders and subfolders to remove the .svn folder, OR:
2. Right-click on a working copy and choose “Export…” from the context menu. When asked to choose a library, select the same library as the working copy.
This will overwrite the versioned copy with a clean, unversioned one, effectively unversioning the project!
More details at the TortoiseSVN site…