getgraphlogrevs: do not convert smartset to baseset

We are now sure that revs is a smartset. We remove the baseset call that would
defeat any lazyness.

mercurial/cmdutil.py

@@ -1650,7 +1650,6 b' def getgraphlogrevs(repo, pats, opts):'
             revs.reverse()
     if not revs:
         return [], None, None
-    revs = revset.baseset(revs)
     expr, filematcher = _makegraphlogrevset(repo, pats, opts, revs)
     if possiblyunsorted:
         revs.sort(reverse=True)