[FIX] Fix issue with duplicate revision column when creating a trim.db introduced in r68467
git-svn-id: svn+ssh://svn.code.sf.net/p/tikiwiki/code/trim@68503 b456876b-0849-0410-b77d-98878d47e9d5
git-svn-id: svn+ssh://svn.code.sf.net/p/tikiwiki/code/trim@68503 b456876b-0849-0410-b77d-98878d47e9d5