SVN repository files can disclose SVN addresses, SVN usernames, and date information. While disclosures of this type do not provide chances of direct attack, they can be useful for an attacker when combined with other vulnerabilities or during the exploitation of some other vulnerabilities.
Do not leave SVN repository files on production environments. If there is a business requirement to do so, implement access control mechanisms to stop public access to SVN repository files. Also use Export if you do one time deployments, instead of a checkout.