VernacList handling was lost in STM merge

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16769 85f007b7-540e-0410-9357-904b9bb8a0f7
Remove outdated comment

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16770 85f007b7-540e-0410-9357-904b9bb8a0f7