We check out all the dependency files for our project form Subversion (TortoiseSVN) and make a build everyday.The problem is when we check out we have the .svn folder in the checked out folders.Now, we need to remove the .svn folder alone form all the folders that we checked out.
You can use the subversion export action to create a working copy that has no .svn folders.
If you really want to use checkout, I attached a FinalBuilder project which has a powershell script in an action that will remove .svn and _svn directories from a working copy.