Remove jython from tested python versions

After testing with the jython 2.7 beta it seems it will require some
work to get jython back working.  So for now remove it from this list
so it doesn't get picked up by normal test runs.

testing/conftest.py

@@ -103,7 +103,7 @@ def getexecutable(name, cache={}):
         return executable
 
 @pytest.fixture(params=['python2.6', 'python2.7', 'python3.3', "python3.4",
-                        'pypy', 'pypy3', 'jython'])
+                        'pypy', 'pypy3'])
 def anypython(request):
     name = request.param
     executable = getexecutable(name)