Skip C extension test for Python <=3.4

.appveyor.yml

@@ -4,10 +4,8 @@ environment:
   PYTHONIOENCODING: "UTF-8"
 
   matrix:
-    - PYTHON: "C:/Python27"
+    - PYTHON: "C:/Python27-x64"
     - PYTHON: "C:/Python34-x64"
-      DISTUTILS_USE_SDK: "1"
-      MSSdk: "1"
     - PYTHON: "C:/Python35-x64"
     - PYTHON: "C:/Python36-x64"
 

tests/masonry/builders/test_complete.py

@@ -33,6 +33,7 @@ def clear_samples_dist():
             shutil.rmtree(str(dist))
 
 
+@pytest.mark.skipif(sys.platform == "win32" and sys.version_info <= (3, 4))
 def test_wheel_c_extension():
     module_path = fixtures_dir / "extended"
     builder = CompleteBuilder(Poetry.create(module_path), NullVenv(True), NullIO())