fix flakes failures

testing/test_assertrewrite.py

@@ -415,7 +415,7 @@ def test_rewritten():
                         reason='packages without __init__.py not supported on python 2')
     def test_package_without__init__py(self, testdir):
         pkg = testdir.mkdir('a_package_without_init_py')
-        mod = pkg.join('module.py').ensure()
+        pkg.join('module.py').ensure()
         testdir.makepyfile("import a_package_without_init_py.module")
         assert testdir.runpytest().ret == 0
 

testing/test_nose.py

@@ -1,4 +1,4 @@
-import py, pytest
+import pytest
 
 def setup_module(mod):
     mod.nose = pytest.importorskip("nose")

testing/test_pytester.py

@@ -1,4 +1,3 @@
-import py
 import pytest
 import os
 from _pytest.pytester import HookRecorder

testing/test_session.py

@@ -1,4 +1,4 @@
-import pytest, py
+import pytest
 
 class SessionTests:
     def test_basic_testitem_events(self, testdir):

testing/test_tmpdir.py

@@ -1,4 +1,4 @@
-import py, pytest
+import pytest
 
 from _pytest.tmpdir import tmpdir, TempdirHandler