Fix flakes

_pytest/mark.py

@@ -1,6 +1,5 @@
 """ generic mechanism for marking and selecting python functions. """
 import inspect
-import py
 
 
 class MarkerError(Exception):

_pytest/pdb.py

@@ -4,7 +4,6 @@ import pdb
 import sys
 
 import pytest
-import py
 
 
 def pytest_addoption(parser):