Remove/replace some unneeded usages of py.path

testing/example_scripts/tmpdir/tmp_path_fixture.py

@@ -0,0 +1,7 @@
+import pytest
+
+
+@pytest.mark.parametrize("a", [r"qwe/\abc"])
+def test_fixture(tmp_path, a):
+    assert tmp_path.is_dir()
+    assert list(tmp_path.iterdir()) == []

testing/example_scripts/tmpdir/tmpdir_fixture.py

@@ -1,7 +0,0 @@
-import pytest
-
-
-@pytest.mark.parametrize("a", [r"qwe/\abc"])
-def test_fixture(tmpdir, a):
-    tmpdir.check(dir=1)
-    assert tmpdir.listdir() == []