removing run_tests.sh
removing run_tests.sh

run_tests.sh is a shell script that builds a virtualenv, runs
setup.py, and executes tests.  This file is not used by the
build process or by developers.  Tox is being used for this
functionality.

Change-Id: Ib86cdc98052154b9f5b40f09f9786a827a754792

cneill/barbican,openstack/barbican,jmvrbanac/barbican,MCDong/barbican,MCDong/barbican,cloudkeep/barbican,cneill/barbican,cloudkeep/barbican,openstack/barbican,jmvrbanac/barbican