I had a colleague that committed work to the trunk folder whilst I continued to work on a branch. Initially we thought the ideas will be used, but later realized that we would rather leave it for later. His last version was 283. I've now created a branch and put the 283 code in there. I did this by creating a branch from version 270 (last good version) and then replaced the files there and committed them. I'm sure that part is all fine now.
But how do I revert the trunk folder back to version 270? I use TortoiseSVN, but when reverting to version 270, it only updates my local copy - the 271-283 versions stays on the repository. How can I remove them from the repository?