Remove etc/logging.conf
Remove etc/logging.conf

 * We should not keep .conf files, only examples

Change-Id: If2e37dfb46048180cc0391b8ed9aa0d295d11148

dennybaa/mistral,TimurNurlygayanov/mistral,StackStorm/mistral,openstack/mistral,dennybaa/mistral,openstack/mistral,StackStorm/mistral