disable pypy on windows until scandir works for it

Author: RonnyPfannschmidt

appveyor.yml

@@ -14,7 +14,7 @@ environment:
   - TOXENV: "py34"
   - TOXENV: "py35"
   - TOXENV: "py36"
-  - TOXENV: "pypy"
+#  - TOXENV: "pypy" reenable when we are able to provide a scandir wheel or build scandir
   - TOXENV: "py27-pexpect"
   - TOXENV: "py27-xdist"
   - TOXENV: "py27-trial"