Remove stray print

A previous commit introduced a stray print operation.  Remove it.

Signed-off-by: Steven Dake <[email protected]>

tests/integration/service_test.py

@@ -422,7 +422,6 @@ class ServiceTest(DockerClientTestCase):
     def test_pid_mode_none_defined(self):
         service = self.create_service('web', pid=None)
         container = create_and_start_container(service)
-        print 'STEAK %s' % (container.get('HostConfig.PidMode'))
         self.assertEqual(container.get('HostConfig.PidMode'), '')
 
     def test_pid_mode_host(self):