If you’re merely deleting the file, then all you have to do is use your Subversion client to delete it from your working space and then commit the change. However, that file will still exist in the history so that it can be undeleted in the future.

To delete it permanently, you will have to:

• Export your repository and download the dump file
• Use svndumpfilter to filter out the file/folder that you don’t want
• Recreate your repository and import the filtered file.