Remove broken/defunct pypy from tox.ini
Drive-by clean up lint exclude.
[tox]
minversion = 1.6
-envlist = py3,pypy,lint
+envlist = py3,lint
skipsdist = True
[testenv]
@@ -48,4 +48,4 @@ commands=
show-source = True
ignore = E203, E266, E501, W503, W504
builtins = _
-exclude=.venv,.git,.tox,dist,doc,*openstack/common*,*lib/python*,*egg,build
+exclude=.venv,.git,.tox,dist,doc,*egg,build
