This is a simple utility to remove all .svn folders recursively.

svnRemover

Use it at your own risk!

Source code:

FileSelectFolder, folder, %A_Desktop%
Loop, %folder%\*.*, 2, 1
{
	FileFullPath := A_LoopFileLongPath
	IfInString, FileFullPath, .svn
		FileRemoveDir, %FileFullPath%, 1
}