remove a hack that isn't needed because runtestprotocol now memorizes pending teardowns and thus dist-testing has "exact" teardowns as well

_pytest/__init__.py

@@ -1,2 +1,2 @@
 #
-__version__ = '2.2.0.dev9'
+__version__ = '2.2.0.dev10'

_pytest/main.py

@@ -330,6 +330,8 @@ class Item(Node):
     """ a basic test invocation item. Note that for a single function
     there might be multiple test invocation items.
     """
+    nextitem = None
+
     def reportinfo(self):
         return self.fspath, None, ""
 

_pytest/runner.py

@@ -340,13 +340,7 @@ class SetupState(object):
         assert not self._finalizers
 
     def teardown_exact(self, item):
-        try:
-            colitem = item.nextitem
-        except AttributeError:
-            # in distributed testing there might be no known nexitem
-            # and in this case we use the parent node to at least call
-            # teardown of the current item
-            colitem = item.parent
+        colitem = item.nextitem
         needed_collectors = colitem and colitem.listchain() or []
         self._teardown_towards(needed_collectors)