remove dead utils.upgradedir

closes  #2767

IPython/utils/tests/test_imports.py

@@ -1,26 +1,23 b''
 # encoding: utf-8
 
 def test_import_coloransi():
     from IPython.utils import coloransi
 
 def test_import_generics():
     from IPython.utils import generics
 
 def test_import_ipstruct():
     from IPython.utils import ipstruct
 
 def test_import_PyColorize():
     from IPython.utils import PyColorize
 
 def test_import_rlineimpl():
     from IPython.utils import rlineimpl
 
 def test_import_strdispatch():
     from IPython.utils import strdispatch
 
-def test_import_upgradedir():
-    from IPython.utils import upgradedir
-
 def test_import_wildcard():
     from IPython.utils import wildcard