Remove jjb from tox.ini

Since the split to project-config, there is no longer a need to
test this environment in tox.

Change-Id: I9a3866126506a9784a38f2c859bac6b5774660b7

tox.ini

@@ -28,13 +28,5 @@ exclude = .tox
 ignore = E125,H
 select = H231
 
-[testenv:jjb]
-basepython = python2.7
-deps = jenkins-job-builder
-commands =
-  rm -rf {envdir}/tmp
-  mkdir -p {envdir}/tmp
-  jenkins-jobs -l debug test -o {envdir}/tmp modules/openstack_project/files/jenkins_job_builder/config
-
 [testenv:bashate]
 commands = bashate -v