fix missed Path import

RonnyPfannschmidt · RonnyPfannschmidt · commit 00716177b4af · 2018-10-11T07:15:09.000+02:00
diff --git a/testing/python/fixture.py b/testing/python/fixture.py
@@ -6,7 +6,7 @@
 from _pytest.pytester import get_public_names
 from _pytest.fixtures import FixtureLookupError, FixtureRequest
 from _pytest import fixtures
-from _pytest.compat import Path
+from _pytest.pathlib import Path
 
 
 def test_getfuncargnames():
