removed unused imports

tangostationcontrol/tangostationcontrol/integration_test/default/devices/test_observation.py

@@ -5,12 +5,11 @@ from tangostationcontrol.test.devices.test_observation_base import TestObservati
 from tangostationcontrol.integration_test import base
 from tangostationcontrol.devices.observation_control import observation_wrapper
 from tangostationcontrol.integration_test.device_proxy import TestDeviceProxy
-import numpy
-from os import environ
 
+from os import environ
 from json import loads
 
-from tango import DevState, ApiUtil
+from tango import DevState
 
 class TestObservation(base.IntegrationTestCase):