Remove run_tests.sh
Remove run_tests.sh

run_tests.sh has been deprecated for a long time. All tests are run
through tox now, so run_tests.sh can go away for good.

Change-Id: Ice138c8ebbf526cd18ebba1e13cb939172b91154

gooddata/openstack-nova,rahulunair/nova,Juniper/nova,rajalokan/nova,openstack/nova,Juniper/nova,mikalstill/nova,klmitch/nova,mikalstill/nova,vmturbo/nova,openstack/nova,vmturbo/nova,rahulunair/nova,rajalokan/nova,mikalstill/nova,gooddata/openstack-nova,jianghuaw/nova,phenoxim/nova,jianghuaw/nova,rajalokan/nova,mahak/nova,phenoxim/nova,Juniper/nova,vmturbo/nova,Juniper/nova,jianghuaw/nova,gooddata/openstack-nova,gooddata/openstack-nova,klmitch/nova,mahak/nova,vmturbo/nova,openstack/nova,jianghuaw/nova,mahak/nova,klmitch/nova,rahulunair/nova,rajalokan/nova,klmitch/nova