mq: use the new checklocalchange in the strip command

The strip command never use the `refresh` argument. So we can use the function
we just extracted.

hgext/mq.py

@@ -1102,7 +1102,7 b' class queue(object):'
             lock = repo.lock()
 
             if update:
-                self.checklocalchanges(repo, force=force, refresh=False)
+                checklocalchanges(repo, force=force)
                 urev = self.qparents(repo, revs[0])
                 hg.clean(repo, urev)
                 repo.dirstate.write()