WIP checking if unittest2 is actually needed

Author: nicoddemus

src/_pytest/nose.py

@@ -10,7 +10,7 @@
 
 def get_skip_exceptions():
     skip_classes = set()
-    for module_name in ("unittest", "unittest2", "nose"):
+    for module_name in ("unittest", "nose"):
         mod = sys.modules.get(module_name)
         if hasattr(mod, "SkipTest"):
             skip_classes.add(mod.SkipTest)