def METHOD_NAME(self):
    """
    1) Create an env object.
    2) Register 2 vms to the env.
    3) Verify both vms are in the env.
    4) Remove one of those vms.
    5) Verify that the removed vm is no longer in env.
    """
    env = utils_env.Env(filename=self.envfilename)
    params = utils_params.Params({"main_vm": 'rhel7-migration'})
    vm1 = FakeVm(params['main_vm'], params)
    vm1.is_alive()
    vm2 = FakeVm('vm2', params)
    vm2.is_alive()
    env.register_vm(params['main_vm'], vm1)
    env.register_vm('vm2', vm2)
    assert vm1 in env.get_all_vms()
    assert vm2 in env.get_all_vms()
    env.unregister_vm('vm2')
    assert vm1 in env.get_all_vms()
    assert vm2 not in env.get_all_vms()