[hironx client] Remove experimental dependency

[130s]

See #469 (comment)

Confirmed simple tasks work on RViz simulation via ipython.

[130s]

Only the backward check for 315.1.10 is failing:

[ROSTEST]-----------------------------------------------------------------------

[hironx_ros_bridge.rosunit-test_hironx_ros_bridge_controller/test_tf_and_controller][ERROR]
frame_name (RARM_JOINT5:WAIST) is not supported
  File "/usr/lib/python2.7/unittest/case.py", line 331, in run
    testMethod()
  File "/home/travis/catkin_ws/install_isolated/share/hironx_ros_bridge/test/test_hironx_ros_bridge_controller.py", line 19, in test_tf_and_controller
    pos_c = self.robot.getCurrentPosition('RARM_JOINT5','WAIST')
  File "/home/travis/catkin_ws/install_isolated/lib/python2.7/dist-packages/hrpsys/hrpsys_config.py", line 1261, in getCurrentPosition
    pose = self.getCurrentPose(lname, frame_name)
  File "/home/travis/catkin_ws/install_isolated/lib/python2.7/dist-packages/hrpsys/hrpsys_config.py", line 1233, in getCurrentPose
    raise RuntimeError('frame_name ('+lname+') is not supported')
--------------------------------------------------------------------------------


SUMMARY
�[1;31m * RESULT: FAIL�[0m
 * TESTS: 1
�[1;31m * ERRORS: 1�[0m
 * FAILURES: 0

[130s]

[hironx_ros_bridge.rosunit-test_hironx_target/testGetterByFrame][ERROR]---------
unsupported operand type(s) for -: 'float' and 'NoneType'
  File "/usr/lib/python2.7/unittest/case.py", line 331, in run
    testMethod()
  File "/home/travis/catkin_ws/install_isolated/share/hironx_ros_bridge/test/test_hironx_target.py", line 189, in testGetterByFrame
    numpy.testing.assert_array_almost_equal(numpy.array(posel1), numpy.array(posel2), decimal=2)
  File "/usr/lib/python2.7/dist-packages/numpy/testing/utils.py", line 811, in assert_array_almost_equal
    header=('Arrays are not almost equal to %d decimals' % decimal))
  File "/usr/lib/python2.7/dist-packages/numpy/testing/utils.py", line 627, in assert_array_compare
    val = comparison(x, y)
  File "/usr/lib/python2.7/dist-packages/numpy/testing/utils.py", line 806, in compare
    z = abs(x-y)

unsupported operand type(s) for -: 'float' and 'NoneType'

This can happen when either compared arg is None and in this case posel2 returned by getCurrentPose is None. So the root cause is why does getCurrentPose return None while it's supposed not to.

I think not all temporary methods that I'm removing in this PR are available upstream in hrpsys-base. Will open a PR against.

[130s]

I think not all temporary methods that I'm removing in this PR are available upstream in hrpsys-base. Will open a PR against.

Done fkanehiro/hrpsys-base#1063. Once that PR gets merged then this hopefully PR will pass the test.