On the 1.8.x-svn_fs_info-removal branch, remove trunk-only code that has been
#define'd away on 1.8.x.

git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/1.8.x-svn_fs_info-removal@1467421 13f79535-47bb-0310-9956-ffa450edef68