largefile: use `set_clean` instead of `normal` in `repo.status`

This is the newer, more semantic API.

Differential Revision: https://phab.mercurial-scm.org/D11157

hgext/largefiles/reposetup.py

@@ -222,7 +222,7 b' def reposetup(ui, repo):'
                             else:
                                 if listclean:
                                     clean.append(lfile)
-                                lfdirstate.normal(lfile)
+                                lfdirstate.set_clean(lfile)
                     else:
                         tocheck = unsure + modified + added + clean
                         modified, added, clean = [], [], []