clean_up: only delete numeric keys (to not disturb other things using the process dictionary, like yxa_test_config)
clean_up: only delete numeric keys (to not disturb other things using the process dictionary, like yxa_test_config)

git-svn-id: 3f662d0c7823f96a484d6a9a7c90f2d7866b6747@1530 e454d3dc-12ff-0310-9b8b-94264392205f

bernardd/yxa,bernardd/yxa,bernardd/yxa,bernardd/yxa