Skip pypy stuff.

.coveragerc

@@ -3,4 +3,4 @@ branch = 1
 cover_pylib = 0
 omit = celery.utils.debug,celery.tests.*,celery.bin.graph
 [report]
-omit = */python?.?/*,*/site-packages/*
+omit = */python?.?/*,*/site-packages/*,*/pypy/*